130-442: Population density (in agriculture : standing stock or plant density ) is a measurement of population per unit land area. It is mostly applied to humans , but sometimes to other living organisms too. It is a key geographical term. Population density is population divided by total land area , sometimes including seas and oceans, as appropriate. Low densities may cause an extinction vortex and further reduce fertility. This
260-412: A U.S. state or Washington, D.C. can vote in presidential elections. Puerto Rico has eight senatorial districts , 40 representative districts , and 78 municipalities ; there are no first-order administrative divisions as defined by the U.S. government. Municipalities are subdivided into wards or barrios , and those into sectors. Each municipality has a mayor and a municipal legislature elected for
390-570: A fig leaf , i.e., associated with the covering up of an act that is actually embarrassing or distasteful with something of innocuous appearance. Puerto Rico remains a territory of the United States, exercising substantial internal self-government, but subordinated to the U.S. Constitution in areas such as foreign affairs or defense. For this reason, it is not considered to be a full-fledged associated state under either international or U.S. domestic law. The history of Puerto Rico began with
520-810: A lord of the manor with a Roman Catholic church and priest. Thanks to the exchange with the Al-Andalus where the Arab Agricultural Revolution was underway, European agriculture transformed, with improved techniques and the diffusion of crop plants, including the introduction of sugar, rice, cotton and fruit trees (such as the orange). After 1492, the Columbian exchange brought New World crops such as maize, potatoes, tomatoes, sweet potatoes , and manioc to Europe, and Old World crops such as wheat, barley, rice, and turnips , and livestock (including horses, cattle, sheep and goats) to
650-436: A binding referendum. The bill does not decide PR's fate, it simply prepares the United States to respond the outcome of referendum. In the 5 November 2024 elections, there was three choices in a non-binding referendum which included Statehood, Independence, or Independence with Free Association on the ballot; Statehood won with 59%. In addition, on November 5, 2024, Jennifer Gonzalez won the office of Governor of Puerto Rico in
780-470: A combination of labor supply and labor demand trends have driven down the share of population employed in agriculture. During the 16th century in Europe, between 55 and 75% of the population was engaged in agriculture; by the 19th century, this had dropped to between 35 and 65%. In the same countries today, the figure is less than 10%. At the start of the 21st century, some one billion people, or over 1/3 of
910-543: A fertilizer for crops. Puerto Rico Puerto Rico ( Spanish for 'rich port'; abbreviated PR ), officially the Commonwealth of Puerto Rico , is a self-governing Caribbean archipelago and island organized as an unincorporated territory of the United States under the designation of commonwealth . Located about 1,000 miles (1,600 km) southeast of Miami , Florida , between
1040-467: A four-year term. The municipality of San Juan is the oldest, founded in 1521; the next earliest settlements are San Germán in 1570, Coamo in 1579, Arecibo in 1614, Aguada in 1692 and Ponce in 1692. Increased settlement in the 18th century saw 30 more communities established, following 34 in the 19th century. Six were founded in the 20th century, the most recent being Florida in 1971. Since 1952, Puerto Rico has had three main political parties:
1170-664: A hazardous industry, and farmers worldwide remain at high risk of work-related injuries, lung disease, noise-induced hearing loss , skin diseases, as well as certain cancers related to chemical use and prolonged sun exposure. On industrialized farms , injuries frequently involve the use of agricultural machinery , and a common cause of fatal agricultural injuries in developed countries is tractor rollovers . Pesticides and other chemicals used in farming can be hazardous to worker health , and workers exposed to pesticides may experience illness or have children with birth defects. As an industry in which families commonly share in work and live on
1300-444: A high use of inputs (water, fertilizer, pesticide and automation). It is practiced mainly in developed countries. From the twentieth century onwards, intensive agriculture increased crop productivity. It substituted synthetic fertilizers and pesticides for labor, but caused increased water pollution, and often involved farm subsidies. Soil degradation and diseases such as stem rust are major concerns globally; approximately 40% of
1430-828: A key part of the Spanish Empire from the early years of the exploration, conquest and colonization of the New World . The island was a major military post during many wars between Spain and other European powers for control of the region in the 16th, 17th and 18th centuries. In 1593, Portuguese soldiers, sent from Lisbon by order of Phillip II, composed the first garrison of the San Felipe del Morro fortress in Puerto Rico. Some brought their wives, while others married Puerto Rican women, and today there are many Puerto Rican families with Portuguese last names. The smallest of
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#17327810708291560-465: A little less than the land area of Puerto Rico , 8,868 square kilometres (3,424 sq mi). Although the arithmetic density is the most common way of measuring population density, several other methods have been developed to provide alternative measures of population density over a specific area. Agriculture Agriculture encompasses crop and livestock production, aquaculture , and forestry for food and non-food products. Agriculture
1690-767: A long history of service in the U.S. Armed Forces and, since 1917, they have been included in the U.S. compulsory draft when it has been in effect. Though the Commonwealth government has its own tax laws, residents of Puerto Rico, contrary to a popular misconception, do pay U.S. federal taxes: customs taxes (which are subsequently returned to the Puerto Rico Treasury), import/export taxes, federal commodity taxes, social security taxes, etc. Residents pay federal payroll taxes , such as Social Security and Medicare , as well as Commonwealth of Puerto Rico income taxes. All federal employees, those who do business with
1820-447: A positive note, the gender gap in access to mobile internet in low- and middle-income countries fell from 25 percent to 16 percent between 2017 and 2021, and the gender gap in access to bank accounts narrowed from 9 to 6 percentage points. Women are as likely as men to adopt new technologies when the necessary enabling factors are put in place and they have equal access to complementary resources. Agriculture, specifically farming, remains
1950-520: A secondary but strategically significant role compared to larger and wealthier colonies like Peru and New Spain . By the late 19th century, a distinct Puerto Rican identity began to emerge, centered around a fusion of European , African , and indigenous elements. In 1898, following the Spanish–American War , Puerto Rico was acquired by the United States . Puerto Ricans have been U.S. citizens since 1917 and can move freely between
2080-404: A significant decrease in genetic diversity and resources among livestock breeds, leading to a corresponding decrease in disease resistance and local adaptations previously found among traditional breeds. Grassland based livestock production relies upon plant material such as shrubland , rangeland , and pastures for feeding ruminant animals. Outside nutrient inputs may be used, however manure
2210-588: A significant degree of federal control involved in its establishment and operations. In particular, the authority to establish the control board derives from the federal government's constitutional power to "make all needful rules and regulations" regarding U.S. territories; The president would appoint all seven voting members of the board; and the board would have broad sovereign powers to effectively overrule decisions by Puerto Rico's legislature, governor, and other public authorities. There would be another referendum in 2017 in Puerto Rico, in favor of statehood although it
2340-492: A small area of forest is cleared by cutting and burning the trees. The cleared land is used for growing crops for a few years until the soil becomes too infertile, and the area is abandoned. Another patch of land is selected and the process is repeated. This type of farming is practiced mainly in areas with abundant rainfall where the forest regenerates quickly. This practice is used in Northeast India, Southeast Asia, and
2470-503: A vote in the U.S. Congress , which oversees it under the Puerto Rico Federal Relations Act of 1950 . Congress approved a territorial constitution in 1952, allowing residents of the archipelago to elect a governor in addition to a senate and house of representatives . The political status of Puerto Rico is an ongoing debate . Beginning in the mid-20th century, the U.S. government , together with
2600-552: A year, or requiring irrigation. In all of these environments perennial crops are grown (coffee, chocolate) and systems are practiced such as agroforestry . In temperate environments, where ecosystems were predominantly grassland or prairie , highly productive annual farming is the dominant agricultural system. Important categories of food crops include cereals, legumes, forage, fruits and vegetables. Natural fibers include cotton, wool , hemp , silk and flax . Specific crops are cultivated in distinct growing regions throughout
2730-473: A yearly summit to discuss safety. Overall production varies by country as listed. The twenty largest countries by agricultural output (in nominal terms) at peak level as of 2018, according to the IMF and CIA World Factbook . Cropping systems vary among farms depending on the available resources and constraints; geography and climate of the farm; government policy; economic, social and political pressures; and
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#17327810708292860-509: Is 53/km (140/sq mi). This includes all continental and island land area, including Antarctica . However, if Antarctica is excluded, then population density rises to over 58 per square kilometre (150/sq mi). The European Commission's Joint Research Centre (JRC) has developed a suite of (open and free) data and tools named the Global Human Settlement Layer (GHSL) to improve the science for policy support to
2990-467: Is Spanish for "rich port". Puerto Ricans often call the island Borinquen , a derivation of Borikén , its Indigenous Taíno name, which is popularly said to mean "Land of the Valiant Lord". The terms boricua , borinqueño , and borincano are commonly used to identify someone of Puerto Rican heritage, and derive from Borikén and Borinquen respectively. The island
3120-584: Is a hybrid of a Chilean and a North American species, developed by breeding in Europe and North America. The indigenous people of the Southwest and the Pacific Northwest practiced forest gardening and fire-stick farming . The natives controlled fire on a regional scale to create a low-intensity fire ecology that sustained a low-density agriculture in loose rotation; a sort of "wild" permaculture . A system of companion planting called
3250-520: Is also popularly known in Spanish as La Isla del Encanto , meaning "the island of enchantment". Columbus named the island San Juan Bautista , in honor of Saint John the Baptist , while the capital city was named Ciudad de Puerto Rico ("Rich Port City"). Eventually traders and other maritime visitors came to refer to the entire island as Puerto Rico, while San Juan became the name used for
3380-626: Is both a cause of and sensitive to environmental degradation , such as biodiversity loss , desertification , soil degradation , and climate change , all of which can cause decreases in crop yield. Genetically modified organisms are widely used, although some countries ban them . The word agriculture is a late Middle English adaptation of Latin agricultūra , from ager 'field' and cultūra ' cultivation ' or 'growing'. While agriculture usually refers to human activities, certain species of ant , termite and beetle have been cultivating crops for up to 60 million years. Agriculture
3510-481: Is called the Allee effect after the scientist who identified it. Examples of the causes of reduced fertility in low population densities are: Population density is the number of people per unit of area, usually transcribed as "per square kilometer" or square mile, and which may include or exclude, for example, areas of water or glaciers. Commonly this is calculated for a county , city , country , another territory or
3640-444: Is defined with varying scopes, in its broadest sense using natural resources to "produce commodities which maintain life, including food, fiber, forest products, horticultural crops, and their related services". Thus defined, it includes arable farming , horticulture, animal husbandry and forestry , but horticulture and forestry are in practice often excluded. It may also be broadly decomposed into plant agriculture , which concerns
3770-581: Is headed by the governor , currently Pedro Pierluisi Urrutia . The legislative branch consists of the bicameral Legislative Assembly , made up of a Senate as its upper chamber and a House of Representatives as its lower chamber; the Senate is headed by a president , currently José Luis Dalmau , while the House is headed by the speaker of the House , currently Tatito Hernández . The governor and legislators are elected by popular vote every four years, with
3900-482: Is land and 1,900 sq mi (4,900 km ) is water. Puerto Rico is larger than Delaware and Rhode Island but smaller than Connecticut . The maximum length of the main island from east to west is 110 mi (180 km), and the maximum width from north to south is 40 mi (64 km). Puerto Rico is the smallest of the Greater Antilles . It is 80% of the size of Jamaica , just over 18% of
4030-630: Is located in this range. Another important peak is El Yunque , one of the highest in the Sierra de Luquillo at the El Yunque National Forest , with an elevation of 3,494 ft (1,065 m). Puerto Rico has 17 lakes, all man-made, and more than 50 rivers , most of which originate in the Cordillera Central. Rivers in the northern region of the island are typically longer and of higher water flow rates than those of
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4160-438: Is returned directly to the grassland as a major nutrient source. This system is particularly important in areas where crop production is not feasible because of climate or soil, representing 30–40 million pastoralists. Mixed production systems use grassland, fodder crops and grain feed crops as feed for ruminant and monogastric (one stomach; mainly chickens and pigs) livestock. Manure is typically recycled in mixed systems as
4290-492: Is the coquí , a small frog easily identified by the sound of its call, from which it gets its name. Most coquí species (13 of 17) live in the El Yunque National Forest , the only tropical rainforest in the U.S. Forest Service system, located in the northeast of the island. It was previously known as the Caribbean National Forest. El Yunque is home to more than 240 plants, 26 of which are endemic to
4420-559: The American model , with separation of powers subject to the jurisdiction and sovereignty of the United States. All governmental powers are delegated by the United States Congress , with the head of state being the president of the United States . As an unincorporated territory , Puerto Rico lacks full protection under the U.S. Constitution. The government of Puerto Rico is composed of three branches. The executive
4550-659: The Cabo Rojo , Desecheo , Culebra and Vieques National Wildlife Refuges , and in the Caja de Muertos and Mona and Monito Islands Nature Reserves . Examples of endemic species found in this ecoregion are the higo chumbo ( Harrisia portoricensis ), the Puerto Rican crested toad ( Peltophryne lemur ), and the Mona ground iguana ( Cyclura stejnegeri ), the largest land animal native to Puerto Rico. Puerto Rico has three of
4680-552: The Department of War . A U.S. Supreme Court ruling, Ortega v. Lara , 202 U.S. 339, 342 (1906), involving the Foraker Act and referring to the island as "the acquired country", soon affirmed that the U.S. Constitution applied within its territory and that any domestic Puerto Rican laws which did not conflict with it remained in force. The Jones Act of 1917, which made Puerto Ricans U.S. citizens , paved
4810-596: The Dominican Republic in the Greater Antilles and the U.S. Virgin Islands in the Lesser Antilles , it consists of the eponymous main island and numerous smaller islands, including Vieques , Culebra , and Mona . With approximately 3.2 million residents , it is divided into 78 municipalities , of which the most populous is the capital municipality of San Juan , followed by those within
4940-650: The European Commission Directorate Generals and Services and as support to the United Nations system. Several of the most densely populated territories in the world are city-states , microstates and urban dependencies . In fact, 95% of the world's population is concentrated on just 10% of the world's land. These territories have a relatively small area and a high urbanization level, with an economically specialized city population drawing also on rural resources outside
5070-456: The Greater Antilles , Puerto Rico was a stepping-stone in the passage from Europe to Cuba, Mexico, Central America, and the northern territories of South America. Throughout most of the 19th century until the conclusion of the Spanish–American War , Puerto Rico and Cuba were the last two Spanish colonies in the New World; they served as Spain's final outposts in a strategy to regain control of
5200-500: The Indus Valley civilization . In China, from the 5th century BC, there was a nationwide granary system and widespread silk farming . Water-powered grain mills were in use by the 1st century BC, followed by irrigation. By the late 2nd century, heavy ploughs had been developed with iron ploughshares and mouldboards . These spread westwards across Eurasia. Asian rice was domesticated 8,200–13,500 years ago – depending on
5330-471: The Köppen climate classification is mostly tropical rainforest . Temperatures are warm to hot year round, averaging near 85 °F (29 °C) in lower elevations and 70 °F (21 °C) in the mountains. Easterly trade winds pass across the island year round. Puerto Rico has a rainy season , which stretches from April into November, and a dry season stretching from December to March. The mountains of
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5460-583: The Paleolithic , after 10,000 BC. Staple food crops were grains such as wheat and barley, alongside industrial crops such as flax and papyrus . In India , wheat, barley and jujube were domesticated by 9,000 BC, soon followed by sheep and goats. Cattle, sheep and goats were domesticated in Mehrgarh culture by 8,000–6,000 BC. Cotton was cultivated by the 5th–4th millennium BC. Archeological evidence indicates an animal-drawn plough from 2,500 BC in
5590-856: The Popular Democratic Party (PPD in Spanish), the New Progressive Party (PNP in Spanish) and the Puerto Rican Independence Party (PIP). The three parties stand for different political status. The PPD, for example, seeks to maintain the island's status with the U.S. as a commonwealth , while the PNP seeks to make Puerto Rico a U.S. state . Meanwhile, the PIP seeks to make Puerto Rico a sovereign nation free from U.S. authority. In terms of party strength,
5720-638: The Puerto Rico Department of Natural Resources . There are many other even smaller islets , like Monito , located near Mona, and Isla de Cabras and La Isleta de San Juan , both located on the San Juan Bay . The latter is the only inhabited islet with communities like Old San Juan and Puerta de Tierra , which are connected to the main island by bridges. The Commonwealth of Puerto Rico has an area of 5,320 square miles (13,800 km ), of which 3,420 sq mi (8,900 km )
5850-781: The Puerto Rico Industrial Development Company , launched a series of economic projects to develop Puerto Rico into an industrial high-income economy. It is classified by the International Monetary Fund as a developed jurisdiction with an advanced, high-income economy ; it ranks 40th on the Human Development Index . The major sectors of Puerto Rico's economy are manufacturing , primarily pharmaceuticals , petrochemicals , and electronics, followed by services , namely tourism and hospitality. Puerto Rico
5980-570: The San Juan metropolitan area . Spanish and English are the official languages of the government , though Spanish predominates. Puerto Rico was settled by a succession of Amerindian peoples beginning 2,000 to 4,000 years ago; these included the Ortoiroid , Saladoid , and Taíno . It was claimed by Spain following the arrival of Christopher Columbus in 1493 and subsequently colonized by Juan Ponce de León in 1508. Puerto Rico
6110-514: The Tigris and Euphrates rivers and a canal system for irrigation. Ploughs appear in pictographs around 3,000 BC; seed-ploughs around 2,300 BC. Farmers grew wheat, barley, vegetables such as lentils and onions, and fruits including dates, grapes, and figs. Ancient Egyptian agriculture relied on the Nile River and its seasonal flooding. Farming started in the predynastic period at the end of
6240-589: The U.S. Treasury . Residents of Puerto Rico pay into Social Security, and are thus eligible for Social Security benefits upon retirement. They are excluded from the Supplemental Security Income , and the island receives a smaller fraction of the Medicaid funding it would receive if it were a U.S. state. Also, Medicare providers receive less-than-full state-like reimbursements for services rendered to beneficiaries in Puerto Rico, even though
6370-631: The UNESCO Man and the Biosphere Programme : Luquillo Biosphere Reserve represented by El Yunque National Forest and the Guánica Biosphere Reserve . Species endemic to the archipelago number 239 plants, 16 birds and 39 amphibians / reptiles , recognized as of 1998. Most of these (234, 12 and 33 respectively) are found on the main island. The most recognizable endemic species and a symbol of Puerto Rican pride
6500-408: The archipelago and the mainland . However, residents of Puerto Rico are disenfranchised from federal elections and generally do not pay federal income tax . In common with four other territories , Puerto Rico sends a nonvoting representative to the U.S. Congress , called a Resident Commissioner , and participates in presidential primaries ; as it is not a state, Puerto Rico does not have
6630-550: The entire world . The world's population is around 8,000,000,000 and the Earth 's total area (including land and water) is 510,000,000 km (200,000,000 sq mi). Therefore, the worldwide human population density is approximately 8,000,000,000 ÷ 510,000,000 = 16/km (41/sq mi). However, if only the Earth's land area of 150,000,000 km (58,000,000 sq mi) is taken into account, then human population density
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#17327810708296760-630: The molecular clock estimate that is used – on the Pearl River in southern China with a single genetic origin from the wild rice Oryza rufipogon . In Greece and Rome , the major cereals were wheat, emmer, and barley, alongside vegetables including peas, beans, and olives. Sheep and goats were kept mainly for dairy products. In the Americas, crops domesticated in Mesoamerica (apart from teosinte) include squash, beans, and cacao . Cocoa
6890-548: The organic movement . Unsustainable farming practices in North America led to the Dust Bowl of the 1930s. Pastoralism involves managing domesticated animals. In nomadic pastoralism , herds of livestock are moved from place to place in search of pasture, fodder, and water. This type of farming is practiced in arid and semi-arid regions of Sahara , Central Asia and some parts of India. In shifting cultivation ,
7020-892: The 2008 general election. Four years later, the 2012 election saw the emergence of the Movimiento Unión Soberanista (English: Sovereign Union Movement) and the Partido del Pueblo Trabajador (English: Working People's Party) but none obtained more than 1% of the vote. Other non-registered parties include the Puerto Rican Nationalist Party , the Socialist Workers Movement , and the Hostosian National Independence Movement . The nature of Puerto Rico's political relationship with
7150-416: The 2024 general election, with nearly 40% of the vote, who is pro-statehood. Puerto Rico consists of the main island of Puerto Rico and various smaller islands, including Vieques , Culebra , Mona , Desecheo , and Caja de Muertos . Of these five, only Culebra and Vieques are inhabited year-round. Mona, which has played a key role in maritime history, is uninhabited most of the year except for employees of
7280-555: The 3 November 2020 general elections; the ballot asked one question: "Should Puerto Rico be admitted immediately into the Union as a State ?" The results showed that 52 percent of Puerto Rico voters answered yes. In the United States in the early 2020s, the Puerto Rico Status Act was being worked on by Congress, and H.R. 8393 passed the House in 2022- though it has not passed the Senate; this bill would support PR making
7410-540: The Amazon Basin. Subsistence farming is practiced to satisfy family or local needs alone, with little left over for transport elsewhere. It is intensively practiced in Monsoon Asia and South-East Asia. An estimated 2.5 billion subsistence farmers worked in 2018, cultivating about 60% of the earth's arable land . Intensive farming is cultivation to maximize productivity, with a low fallow ratio and
7540-610: The American continents. Realizing that it was in danger of losing its two remaining Caribbean territories, the Spanish Crown revived the Royal Decree of Graces of 1815 . The decree was printed in Spanish, English and French in order to attract Europeans, with the hope that the independence movements would lose their popularity and strength with the arrival of new settlers. Free land was offered to those who wanted to populate
7670-560: The Americas. Irrigation , crop rotation , and fertilizers advanced from the 17th century with the British Agricultural Revolution , allowing global population to rise significantly. Since 1900, agriculture in developed nations, and to a lesser extent in the developing world, has seen large rises in productivity as mechanization replaces human labor, and assisted by synthetic fertilizers , pesticides, and selective breeding . The Haber-Bosch method allowed
7800-863: The Atlantic, is located about 71 mi (114 km) north of Puerto Rico at the boundary between the Caribbean and North American plates. It is 170 mi (270 km) long. At its deepest point, named the Milwaukee Deep , it is almost 27,600 ft (8,400 m) deep. The Mona Canyon , located in the Mona Passage between Puerto Rico and the Dominican Republic, is another prominent oceanic landform with steep walls measuring between 1.25 and 2.17 miles (2.01 and 3.49 km) in height from bottom to top. The climate of Puerto Rico in
7930-572: The Caribbean Sea and North Atlantic Ocean. On average, a quarter of its annual rainfall is contributed from tropical cyclones , which are more prevalent during periods of La Niña than El Niño . A cyclone of tropical storm strength passes near Puerto Rico, on average, every five years. A hurricane passes in the vicinity of the island, on average, every seven years. Since 1851, the Lake Okeechobee Hurricane (also known as
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#17327810708298060-414: The Cordillera Central create a rain shadow and are the main cause of the variations in the temperature and rainfall that occur over very short distances. The mountains can also cause wide variation in local wind speed and direction due to their sheltering and channeling effects, adding to the climatic variation. Daily temperature changes seasonally are quite small in the lowlands and coastal areas. Between
8190-530: The PPD and PNP usually hold about 47% of the vote each while the PIP holds about 5%. After 2007, other parties emerged on the island. The first, the Puerto Ricans for Puerto Rico Party was registered that same year. The party claims that it seeks to address the islands' problems from a status-neutral platform. But it ceased to remain as a registered party when it failed to obtain the required number of votes in
8320-586: The Paleolithic Levant, 23,000 years ago, cereals cultivation of emmer , barley , and oats has been observed near the sea of Galilee. Rice was domesticated in China between 11,500 and 6,200 BC with the earliest known cultivation from 5,700 BC, followed by mung , soy and azuki beans. Sheep were domesticated in Mesopotamia between 13,000 and 11,000 years ago. Cattle were domesticated from
8450-401: The Puerto Rican broad-winged hawk ( Buteo platypterus brunnescens ) and the elfin woods warbler ( Setophaga angelae ). The Northern Karst country of Puerto Rico is also home to one of the remaining rainforest tracts in the island, with the Río Abajo State Forest being the first focus for the reintroduction of the highly endangered Puerto Rican parrot outside of the Sierra de Luquillo. In
8580-420: The Puerto Rican people to exercise fully their inalienable right to self-determination and independence. In November 2012, a two-question referendum took place, simultaneous with the general elections. The first question, voted on in August, asked voters whether they wanted to maintain the current status under the territorial clause of the U.S. Constitution. 54% voted against the status quo, effectively approving
8710-517: The San Felipe Segundo hurricane in Puerto Rico) of September 1928 is the only hurricane to make landfall as a Category 5 hurricane. In 2017, Puerto Rico was affected by Category 5 Hurricane Irma and Category 4 Hurricane Maria , causing widespread and devastating impacts , particularly to the electric grid. Puerto Rico is home to three terrestrial ecoregions: Puerto Rican moist forests , Puerto Rican dry forests , and Greater Antilles mangroves . Puerto Rico has two biosphere reserves recognized by
8840-423: The Three Sisters was developed in North America. The three crops were winter squash , maize, and climbing beans. Indigenous Australians , long supposed to have been nomadic hunter-gatherers , practiced systematic burning, possibly to enhance natural productivity in fire-stick farming. Scholars have pointed out that hunter-gatherers need a productive environment to support gathering without cultivation. Because
8970-450: The U.S. Constitution . Laws enacted at the federal level in the U.S. apply to Puerto Rico as well, regardless of its political status. Their residents do not have voting representation in the U.S. Congress . Puerto Rico lacks "the full sovereignty of an independent nation", for example, the power to manage its "external relations with other nations", which is held by the U.S. federal government. The U.S. Supreme Court has indicated that once
9100-578: The U.S. Constitution has been extended to an area (by Congress or the courts), its coverage is irrevocable. To hold that the political branches may switch the Constitution on or off at will would lead to a regime in which they, not this Court, say "what the law is". Puerto Ricans "were collectively made U.S. citizens" in 1917 as a result of the Jones–Shafroth Act . U.S. citizens residing in Puerto Rico cannot vote in U.S. presidential elections, though both major parties, Republican and Democratic, hold primary elections in Puerto Rico to choose delegates to vote on
9230-409: The U.S. is the subject of ongoing debate in Puerto Rico, the U.S. Congress, and the United Nations . Specifically, the basic question is whether Puerto Rico should remain an unincorporated territory of the U.S., become a U.S. state, or become an independent country. Constitutionally, Puerto Rico is subject to the plenary powers of the U.S. Congress under the territorial clause of Article IV of
9360-793: The United Nations (FAO) posits that the roles and responsibilities of women in agriculture may be changing – for example, from subsistence farming to wage employment, and from contributing household members to primary producers in the context of male-out-migration. In general, women account for a greater share of agricultural employment at lower levels of economic development, as inadequate education, limited access to basic infrastructure and markets, high unpaid work burden and poor rural employment opportunities outside agriculture severely limit women's opportunities for off-farm work. Women who work in agricultural production tend to do so under highly unfavorable conditions. They tend to be concentrated in
9490-461: The United States is roughly 1.7 times more productive than it was in 1948. Agriculture employed 873 million people in 2021, or 27% of the global workforce, compared with 1 027 million (or 40%) in 2000. The share of agriculture in global GDP was stable at around 4% since 2000–2023. Despite increases in agricultural production and productivity, between 702 and 828 million people were affected by hunger in 2021. Food insecurity and malnutrition can be
9620-544: The annual work-related death toll among agricultural employees is at least 170,000, twice the average rate of other jobs. In addition, incidences of death, injury and illness related to agricultural activities often go unreported. The organization has developed the Safety and Health in Agriculture Convention, 2001 , which covers the range of risks in the agriculture occupation, the prevention of these risks and
9750-995: The area, illustrating the difference between high population density and overpopulation . Deserts have very limited potential for growing crops as there is not enough rain to support them. Thus, their population density is generally low. However, some cities in the Middle East, such as Dubai , have been increasing in population and infrastructure growth at a fast pace. Cities with high population densities are, by some, considered to be overpopulated, though this will depend on factors like quality of housing and infrastructure and access to resources. Very densely populated cities are mostly in Asia (particularly Southeast Asia ); Africa's Lagos , Kinshasa , and Cairo ; South America's Bogotá , Lima , and São Paulo ; and Mexico City and Saint Petersburg also fall into this category. City population and especially area are, however, heavily dependent on
9880-553: The available work force, were employed in agriculture. This constitutes approximately 70% of the global employment of children, and in many countries constitutes the largest percentage of women of any industry. The service sector overtook the agricultural sector as the largest global employer in 2007. In many developed countries, immigrants help fill labor shortages in high-value agriculture activities that are difficult to mechanize. Foreign farm workers from mostly Eastern Europe, North Africa and South Asia constituted around one-third of
10010-597: The central west coast and eastern central, early farmers cultivated yams, native millet, and bush onions, possibly in permanent settlements. In the Middle Ages , compared to the Roman period , agriculture in Western Europe became more focused on self-sufficiency . The agricultural population under feudalism was typically organized into manors consisting of several hundred or more acres of land presided over by
10140-675: The commissioner's power to vote in the Committee of the Whole , but the commissioner can vote in committee. Puerto Rican elections are governed by the Federal Election Commission and the State Elections Commission of Puerto Rico . Residents of Puerto Rico, including other U.S. citizens, cannot vote in U.S. presidential elections, but can vote in primaries . Puerto Ricans who become residents of
10270-468: The cultivation of useful plants, and animal agriculture , the production of agricultural animals. The development of agriculture enabled the human population to grow many times larger than could be sustained by hunting and gathering . Agriculture began independently in different parts of the globe, and included a diverse range of taxa , in at least 11 separate centers of origin . Wild grains were collected and eaten from at least 105,000 years ago. In
10400-546: The definition of "urban area" used: densities are almost invariably higher for the center only than when suburban settlements and intervening rural areas are included, as in the agglomeration or metropolitan area (the latter sometimes including neighboring cities). In comparison, based on a world population of 8 billion, the world's inhabitants, if conceptualized as a loose crowd occupying just under 1 m (10 sq ft) per person (cf. Jacobs Method ), would occupy an area of 8,000 square kilometres (3,100 sq mi)
10530-668: The domestication of squash (Cucurbita) and other plants. Coca was domesticated in the Andes, as were the peanut, tomato, tobacco, and pineapple . Cotton was domesticated in Peru by 3,600 BC. Animals including llamas , alpacas , and guinea pigs were domesticated there. In North America , the indigenous people of the East domesticated crops such as sunflower , tobacco, squash and Chenopodium . Wild foods including wild rice and maple sugar were harvested. The domesticated strawberry
10660-521: The dry and wet seasons, there is a temperature change of around 6 °F (3.3 °C). This change is due mainly to the warm waters of the tropical Atlantic Ocean , which significantly modify cooler air moving in from the north and northwest. Coastal water temperatures during the year are about 75 °F (24 °C) in February and 85 °F (29 °C) in August. The highest temperature ever recorded
10790-493: The entity in Spanish is Estado Libre Asociado de Puerto Rico ("Free Associated State of Puerto Rico"), while its official English name is Commonwealth of Puerto Rico . The Spanish official name was suggested by its architect Luis Muñoz Marín and adopted by a constitutional assembly on July 25 1952. Some authorities have called it a euphemism and have charged that the official name in English of "Commonwealth" constitutes
10920-432: The farm itself, entire families can be at risk for injuries, illness, and death. Ages 0–6 may be an especially vulnerable population in agriculture; common causes of fatal injuries among young farm workers include drowning, machinery and motor accidents, including with all-terrain vehicles. The International Labor Organization considers agriculture "one of the most hazardous of all economic sectors". It estimates that
11050-399: The federal government, Puerto Rico-based corporations that intend to send funds to the U.S., and some others, such as Puerto Rican residents that are members of the U.S. military, and Puerto Rico residents who earned income from sources outside Puerto Rico also pay federal income taxes. In addition, because the cutoff point for income taxation is lower than that of the U.S. IRS code, and because
11180-430: The forests of New Guinea have few food plants, early humans may have used "selective burning" to increase the productivity of the wild karuka fruit trees to support the hunter-gatherer way of life. The Gunditjmara and other groups developed eel farming and fish trapping systems from some 5,000 years ago. There is evidence of 'intensification' across the whole continent over that period. In two regions of Australia,
11310-415: The government to move rapidly to provide for the general welfare contributed to political activism by opponents and eventually to the rise of the Puerto Rican Nationalist Party . On 7 January 2020, the country experienced its largest earthquake since 1918, estimated at magnitude 6.4. Economic losses were estimated to be more than $ 3.1 billion. The Puerto Rico Trench , the largest and deepest trench in
11440-422: The greater use of pesticides and fertilizers. Multiple cropping , in which several crops are grown sequentially in one year, and intercropping , when several crops are grown at the same time, are other kinds of annual cropping systems known as polycultures . In subtropical and arid environments, the timing and extent of agriculture may be limited by rainfall, either not allowing multiple annual crops in
11570-441: The input of nutrients (fertilizer or manure ) and some manual pest control . Annual cultivation is the next phase of intensity in which there is no fallow period. This requires even greater nutrient and pest control inputs. Further industrialization led to the use of monocultures , when one cultivar is planted on a large acreage. Because of the low biodiversity , nutrient use is uniform and pests tend to build up, necessitating
11700-514: The island. It is also home to 50 bird species, including the critically endangered Puerto Rican amazon . In addition to El Yunque National Forest, the Puerto Rican moist forest ecoregion is represented by protected areas such as the Maricao and Toro Negro state forests . These areas are home to endangered endemic species such as the Puerto Rican boa ( Chilabothrus inornatus ), the Puerto Rican sharp-shinned hawk ( Accipiter striatus venator ),
11830-518: The islands on the condition that they swear their loyalty to the Spanish Crown and allegiance to the Catholic Church . In 1898, during the Spanish–American War , Puerto Rico was invaded and subsequently became a possession of the U.S. The first years of the 20th century were marked by the struggle to obtain greater democratic rights from the U.S. The Foraker Act of 1900 established a civil government, ending rule by American generals and
11960-597: The last election held in November 2020 . The judicial branch is headed by the chief justice of the Supreme Court of Puerto Rico , currently Maite Oronoz Rodríguez . Members of the judiciary are appointed by the governor with the advice and consent of the Senate. Puerto Rico is represented in the U.S. Congress by a nonvoting delegate to the House of Representatives, the resident commissioner , currently Jenniffer González . Current congressional rules have removed
12090-476: The lower yield associated with organic farming and its impact on global food security . Recent mainstream technological developments include genetically modified food . By 2015, the agricultural output of China was the largest in the world, followed by the European Union, India and the United States. Economists measure the total factor productivity of agriculture, according to which agriculture in
12220-599: The main trading/shipping port and the capital city. The island's name was changed to Porto Rico by the United States after the Treaty of Paris of 1898 . The anglicized name was used by the U.S. government and private enterprises (also Porto in Italian, French, and Portuguese). The name was changed back to Puerto Rico in 1931 by a joint resolution in Congress introduced by Félix Córdova Dávila . The official name of
12350-588: The most dangerous geologic hazards in the island and in the northeastern Caribbean. The 1918 San Fermín earthquake occurred on 11 October , 1918 and had an estimated magnitude of 7.5 on the Richter scale . It originated off the coast of Aguadilla , several kilometers off the northern coast, and was accompanied by a tsunami . It caused extensive property damage and widespread losses, damaging infrastructure, especially bridges. It resulted in an estimated 116 deaths and $ 4 million in property damage. The failure of
12480-445: The parties' presidential candidates. Since Puerto Rico is an unincorporated territory and not a U.S. state, the U.S. Constitution does not fully enfranchise U.S. citizens residing in Puerto Rico. Only fundamental rights under the American federal constitution and adjudications are applied to Puerto Ricans. Various other U.S. Supreme Court decisions have held which rights apply in Puerto Rico and which ones do not. Puerto Ricans have
12610-476: The per-capita income in Puerto Rico is much lower than the average per-capita income on the mainland, more Puerto Rico residents pay income taxes to the local taxation authority than if the IRS code were applied to the island. This occurs because "the Commonwealth of Puerto Rico government has a wider set of responsibilities than do U.S. State and local governments." In 2009, Puerto Rico paid $ 3.742 billion into
12740-437: The philosophy and culture of the farmer. Shifting cultivation (or slash and burn ) is a system in which forests are burnt, releasing nutrients to support cultivation of annual and then perennial crops for a period of several years. Then the plot is left fallow to regrow forest, and the farmer moves to a new plot, returning after many more years (10–20). This fallow period is shortened if population density grows, requiring
12870-414: The poorest countries, where alternative livelihoods are not available, and they maintain the intensity of their work in conditions of climate-induced weather shocks and in situations of conflict. Women are less likely to participate as entrepreneurs and independent farmers and are engaged in the production of less lucrative crops. The gender gap in land productivity between female- and male managed farms of
13000-507: The population applying for assistance after the storms. See also Effects of Hurricane Maria in Puerto Rico It is thought that a combination of the debt crisis and two major hurricanes in the late 2010s, caused further departures from the island. Overall the population has decreased by about half a million in the 21st century, with many seeking better opportunities on the mainland. Puerto Rico held its statehood referendum during
13130-440: The production of fish for human consumption in confined operations, is one of the fastest growing sectors of food production, growing at an average of 9% a year between 1975 and 2007. During the second half of the 20th century, producers using selective breeding focused on creating livestock breeds and crossbreeds that increased production, while mostly disregarding the need to preserve genetic diversity . This trend has led to
13260-477: The result of conflict, climate extremes and variability and economic swings. It can also be caused by a country's structural characteristics such as income status and natural resource endowments as well as its political economy. Pesticide use in agriculture went up 62% between 2000 and 2021, with the Americas accounting for half the use in 2021. The International Fund for Agricultural Development posits that an increase in smallholder agriculture may be part of
13390-874: The role that individuals and organizations engaged in agriculture should play. In the United States, agriculture has been identified by the National Institute for Occupational Safety and Health as a priority industry sector in the National Occupational Research Agenda to identify and provide intervention strategies for occupational health and safety issues. In the European Union, the European Agency for Safety and Health at Work has issued guidelines on implementing health and safety directives in agriculture, livestock farming, horticulture, and forestry. The Agricultural Safety and Health Council of America (ASHCA) also holds
13520-478: The salaried agricultural workforce in Spain, Italy, Greece and Portugal in 2013. In the United States of America, more than half of all hired farmworkers (roughly 450,000 workers) were immigrants in 2019, although the number of new immigrants arriving in the country to work in agriculture has fallen by 75 percent in recent years and rising wages indicate this has led to a major labor shortage on U.S. farms. Around
13650-439: The same size is 24 percent. On average, women earn 18.4 percent less than men in wage employment in agriculture; this means that women receive 82 cents for every dollar earned by men. Progress has been slow in closing gaps in women's access to irrigation and in ownership of livestock, too. Women in agriculture still have significantly less access than men to inputs, including improved seeds, fertilizers and mechanized equipment. On
13780-418: The second question to be voted on in November. The second question posed three alternate status options: statehood, independence, or free association . 61.16% voted for statehood, 33.34% for a sovereign free-associated state, and 5.49% for independence. In 2016, President Barack Obama signed into law H.R. 5278: PROMESA , establishing a Control Board over the Puerto Rican government. This board will have
13910-496: The settlement of the Ortoiroid people before 430 BC. At the time of Christopher Columbus 's arrival in the New World in 1493, the dominant indigenous culture was that of the Taínos . The Taíno people's numbers went dangerously low during the later half of the 16th century because of new infectious diseases carried by Europeans, exploitation by Spanish settlers, and warfare. Located in the northeastern Caribbean, Puerto Rico formed
14040-670: The seven year-long bioluminescent bays in the Caribbean: Laguna Grande in Fajardo , La Parguera in Lajas and Puerto Mosquito in Vieques . These are unique bodies of water surrounded by mangroves that are inhabited by the dinoflagellate Pyrodinium bahamense . However, tourism, pollution, and hurricanes have highly threatened these unique ecosystems. Puerto Rico has a republican form of government based on
14170-706: The size of Hispaniola and 8% of the size of Cuba, the largest of the Greater Antilles. The topography of the island is mostly mountainous with large flat areas in the northern and southern coasts. The main mountain range that crosses the island from east to west is called the Cordillera Central (also known as the Central Mountain Range in English). The highest elevation in Puerto Rico, Cerro de Punta 4,390 feet (1,340 m),
14300-488: The solution to concerns about food prices and overall food security , given the favorable experience of Vietnam. Agriculture provides about one-quarter of all global employment, more than half in sub-Saharan Africa and almost 60 percent in low-income countries. As countries develop, other jobs have historically pulled workers away from agriculture, and labor-saving innovations increase agricultural productivity by reducing labor requirements per unit of output. Over time,
14430-465: The south, since the south receives less rain than the central and northern regions. Puerto Rico is composed of Cretaceous to Eocene volcanic and plutonic rocks, overlain by younger Oligocene and more recent carbonates and other sedimentary rocks . Most of the caverns and karst topography on the island occurs in the northern region. The oldest rocks are approximately 190 million years old ( Jurassic ) and are located at Sierra Bermeja in
14560-541: The southwest part of the island. They may represent part of the oceanic crust and are believed to come from the Pacific Ocean realm. Puerto Rico lies at the boundary between the Caribbean and North American Plates and is being deformed by the tectonic stresses caused by their interaction. These stresses may cause earthquakes and tsunamis . These seismic events, along with landslides , represent some of
14690-614: The southwest, the Guánica State Forest and Biosphere Reserve contain over 600 uncommon species of plants and animals, including 48 endangered species and 16 that are endemic to Puerto Rico, and is considered a prime example of the Puerto Rican dry forest ecoregion and the best-preserved dry forest in the Caribbean. Other protected dry forests in Puerto Rico can be formed within the Caribbean Islands National Wildlife Refuge complex at
14820-400: The synthesis of ammonium nitrate fertilizer on an industrial scale, greatly increasing crop yields and sustaining a further increase in global population. Modern agriculture has raised or encountered ecological, political, and economic issues including water pollution , biofuels , genetically modified organisms , tariffs and farm subsidies , leading to alternative approaches such as
14950-679: The transition from hunter-gatherer to agricultural societies indicate an initial period of intensification and increasing sedentism ; examples are the Natufian culture in the Levant , and the Early Chinese Neolithic in China. Then, wild stands that had previously been harvested started to be planted, and gradually came to be domesticated. In Eurasia, the Sumerians started to live in villages from about 8,000 BC, relying on
15080-618: The way for the drafting of Puerto Rico's Constitution and its approval by Congress and Puerto Rican voters in 1952. Puerto Rico is one of five territories with less representation in the Federal government, along with the Federal District. In 2009, the United Nations Special Committee on Decolonization approved a draft resolution calling on the U.S. government to expedite a process that would allow
15210-671: The wild aurochs in the areas of modern Turkey and Pakistan some 10,500 years ago. Pig production emerged in Eurasia, including Europe, East Asia and Southwest Asia, where wild boar were first domesticated about 10,500 years ago. In the Andes of South America, the potato was domesticated between 10,000 and 7,000 years ago, along with beans, coca , llamas , alpacas , and guinea pigs . Sugarcane and some root vegetables were domesticated in New Guinea around 9,000 years ago. Sorghum
15340-744: The world consist of fewer than 2 hectares (4.9 acres), and take up only around 12% of all agricultural land. Farms and farming greatly influence rural economics and greatly shape rural society , affecting both the direct agricultural workforce and broader businesses that support the farms and farming populations. The major agricultural products can be broadly grouped into foods , fibers , fuels , and raw materials (such as rubber ). Food classes include cereals ( grains ), vegetables , fruits , cooking oils , meat , milk , eggs , and fungi . Global agricultural production amounts to approximately 11 billion tonnes of food, 32 million tonnes of natural fibers and 4 billion m of wood. However, around 14% of
15470-781: The world's agricultural land is seriously degraded. In recent years there has been a backlash against the environmental effects of conventional agriculture, resulting in the organic , regenerative , and sustainable agriculture movements. One of the major forces behind this movement has been the European Union , which first certified organic food in 1991 and began reform of its Common Agricultural Policy (CAP) in 2005 to phase out commodity-linked farm subsidies, also known as decoupling . The growth of organic farming has renewed research in alternative technologies such as integrated pest management , selective breeding, and controlled-environment agriculture . There are concerns about
15600-664: The world's food is lost from production before reaching the retail level. Modern agronomy , plant breeding , agrochemicals such as pesticides and fertilizers , and technological developments have sharply increased crop yields , but also contributed to ecological and environmental damage . Selective breeding and modern practices in animal husbandry have similarly increased the output of meat, but have raised concerns about animal welfare and environmental damage. Environmental issues include contributions to climate change , depletion of aquifers , deforestation , antibiotic resistance , and other agricultural pollution . Agriculture
15730-485: The world, women make up a large share of the population employed in agriculture. This share is growing in all developing regions except East and Southeast Asia where women already make up about 50 percent of the agricultural workforce. Women make up 47 percent of the agricultural workforce in sub-Saharan Africa, a rate that has not changed significantly in the past few decades. However, the Food and Agriculture Organization of
15860-495: The world. In the 20th century, industrial agriculture based on large-scale monocultures came to dominate agricultural output. As of 2021 , small farms produce about one-third of the world's food, but large farms are prevalent. The largest 1% of farms in the world are greater than 50 hectares (120 acres) and operate more than 70% of the world's farmland. Nearly 40% of agricultural land is found on farms larger than 1,000 hectares (2,500 acres). However, five of every six farms in
15990-621: The world. Production is listed in millions of metric tons, based on FAO estimates. Animal husbandry is the breeding and raising of animals for meat, milk, eggs , or wool , and for work and transport. Working animals , including horses, mules , oxen , water buffalo , camels, llamas, alpacas, donkeys, and dogs, have for centuries been used to help cultivate fields, harvest crops, wrangle other animals, and transport farm products to buyers. Livestock production systems can be defined based on feed source, as grassland-based, mixed, and landless. As of 2010 , 30% of Earth's ice- and water-free area
16120-465: Was 110 °F (43 °C) at Arecibo , while the lowest temperature ever recorded was 40 °F (4 °C) in the mountains at Adjuntas , Aibonito , and Corozal . The average yearly precipitation is 66 in (1,676 mm). Climate change in Puerto Rico has had a large impact on the ecosystems and landscapes. Puerto Rico experiences the Atlantic hurricane season , similar to the rest of
16250-444: Was a key factor in the rise of sedentary human civilization , whereby farming of domesticated species created food surpluses that enabled people to live in the cities. While humans started gathering grains at least 105,000 years ago, nascent farmers only began planting them around 11,500 years ago. Sheep, goats, pigs, and cattle were domesticated around 10,000 years ago. Plants were independently cultivated in at least 11 regions of
16380-601: Was boycotted by some political opponents of it. (see 2017 Puerto Rican status referendum ) In 2017, Puerto Rico suffered back-to-back large hurricanes: the Category 5 Hurricane Irma (September 7, 2017) and the Category 4 Hurricane Maria (September 20, 2017). The storms caused an extreme amount of damage to the island, causing the following effects: all power was knocked out, 95% cell service, 43% of waste water treatment plants, 40 thousand land slides, 97% of roads blocked, 28% of health facilities damaged, leading to over 90% of
16510-531: Was contested by other European powers into the 18th century but remained a Spanish possession for the next 400 years. The decline of the indigenous population , followed by an influx of Spanish settlers, primarily from the Canary Islands and Andalusia , and African slaves vastly changed the cultural and demographic landscape of the archipelago. Within the Spanish Empire , Puerto Rico played
16640-640: Was domesticated by the Mayo Chinchipe of the upper Amazon around 3,000 BC. The turkey was probably domesticated in Mexico or the American Southwest. The Aztecs developed irrigation systems, formed terraced hillsides, fertilized their soil, and developed chinampas or artificial islands. The Mayas used extensive canal and raised field systems to farm swampland from 400 BC. In South America agriculture may have begun about 9000 BC with
16770-560: Was domesticated in the Sahel region of Africa by 7,000 years ago. Cotton was domesticated in Peru by 5,600 years ago, and was independently domesticated in Eurasia. In Mesoamerica , wild teosinte was bred into maize (corn) from 10,000 to 6,000 years ago. The horse was domesticated in the Eurasian Steppes around 3500 BC. Scholars have offered multiple hypotheses to explain the historical origins of agriculture. Studies of
16900-584: Was used for producing livestock, with the sector employing approximately 1.3 billion people. Between the 1960s and the 2000s, there was a significant increase in livestock production, both by numbers and by carcass weight, especially among beef, pigs and chickens, the latter of which had production increased by almost a factor of 10. Non-meat animals, such as milk cows and egg-producing chickens, also showed significant production increases. Global cattle, sheep and goat populations are expected to continue to increase sharply through 2050. Aquaculture or fish farming,
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