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99-799: The Puente de Isabel II , Puente de Triana or Triana Bridge , is a metal arch bridge in Seville , Spain, that connects the Triana neighbourhood with the centre of the city. It crosses the Canal de Alfonso XIII , one of the arms of the River Guadalquivir that isolate Triana as an almost-island. It was built during the reign of Isabella II of Spain and completed in 1852 as the first solid bridge in Seville, replacing an earlier floating bridge consisting of boats (a pontoon bridge ). First built by

198-724: A charter member of the United Nations. In 1950 Turkey became a member of the Council of Europe . After fighting as part of the UN forces in the Korean War , Turkey joined NATO in 1952, becoming a bulwark against Soviet expansion into the Mediterranean . Military coups or memorandums, which happened in 1960 , 1971 , 1980 , and 1997 , complicated Turkey's transition to a democratic multiparty system . Between 1960 and

297-723: A Code with principles similar to the German Penal Code and German law generally. Administrative law is based on the French equivalent and procedural law generally shows the influence of the Swiss, German and French legal systems. Islamic principles do not play a part in the legal system. Law enforcement in Turkey is carried out by several agencies under the jurisdiction of the Ministry of Internal Affairs . These agencies are

396-512: A deck arch bridge. Any part supported from arch below may have spandrels that are closed or open. The Sydney Harbour Bridge and the Bayonne Bridge are a through arch bridge which uses a truss type arch. Also known as a bowstring arch, this type of arch bridge incorporates a tie between two opposite ends of the arch. The tie is usually the deck and is capable of withstanding the horizontal thrust forces which would normally be exerted on

495-462: A greater passage for flood waters. Bridges with perforated spandrels can be found worldwide, such as in China ( Zhaozhou Bridge , 7th century). Greece ( Bridge of Arta , 17th century) and Wales ( Cenarth Bridge , 18th century). In more modern times, stone and brick arches continued to be built by many civil engineers, including Thomas Telford , Isambard Kingdom Brunel and John Rennie . A key pioneer

594-765: A guide for developing "orthodox expressions of basic Christian teachings". The Byzantine Empire, also referred to as the Eastern Roman Empire, was the continuation of the Roman Empire centered in Constantinople during Late Antiquity and the Middle Ages . The eastern half of the Empire survived the conditions that caused the fall of the West in the 5th century AD, and continued to exist until

693-766: A mixture of " Turkish, Persian and Islamic influences ". In the latter half of the 11th century, the Seljuk Turks began penetrating into medieval Armenia and Anatolia. At the time, Anatolia was a diverse and largely Greek-speaking region after previously being Hellenized . The Seljuk Turks defeated the Byzantines at the Battle of Manzikert in 1071, and later established the Seljuk Sultanate of Rum . During this period, there were also Turkish principalities such as Danishmendids . Seljuk arrival started

792-447: A number were segmental arch bridges (such as Alconétar Bridge ), a bridge which has a curved arch that is less than a semicircle. The advantages of the segmental arch bridge were that it allowed great amounts of flood water to pass under it, which would prevent the bridge from being swept away during floods and the bridge itself could be more lightweight. Generally, Roman bridges featured wedge-shaped primary arch stones ( voussoirs ) of

891-658: A person. As an ethnonym , the etymology is still unknown. In addition to usage in languages such as Chinese in the 6th century, the earliest mention of Turk ( 𐱅𐰇𐰺𐰜 , türü̲k̲ ; or 𐱅𐰇𐰼𐰚 , türk/tẄrk ) in Turkic languages comes from the Second Turkic Khaganate . In Byzantine sources in the 10th century, the name Tourkia was used for defining two medieval states: Hungary ( Western Tourkia ); and Khazaria ( Eastern Tourkia ). The Mamluk Sultanate , with its ruling elite of Turkic origin,

990-448: A quantity of fill material (typically compacted rubble) above the arch in order to increase this dead-weight on the bridge and prevent tension from occurring in the arch ring as loads move across the bridge. Other materials that were used to build this type of bridge were brick and unreinforced concrete. When masonry (cut stone) is used the angles of the faces are cut to minimize shear forces. Where random masonry (uncut and unprepared stones)

1089-650: A reassertion of the ancient, indigenous culture of the Hattian cities of Anatolia". Before 1200 BC, there were four Greek-speaking settlements in Anatolia, including Miletus . Around 1000 BC, Greeks started migrating to the west coast of Anatolia. These eastern Greek settlements played a vital role in shaping the Archaic Greek civilization; important cities included Miletus , Ephesus , Halicarnassus , Smyrna (now İzmir ) and Byzantium (now Istanbul ),

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1188-415: A result, masonry arch bridges are designed to be constantly under compression, so far as is possible. Each arch is constructed over a temporary falsework frame, known as a centring . In the first compression arch bridges, a keystone in the middle of the bridge bore the weight of the rest of the bridge. The more weight that was put onto the bridge, the stronger its structure became. Masonry arch bridges use

1287-583: A rich and diverse cuisine , Turkey is the fifth most visited country in the world. Turchia , meaning "the land of the Turks", had begun to be used in European texts for Anatolia by the end of the 12th century. As a word in Turkic languages , Turk may mean "strong, strength, ripe" or "flourishing, in full strength". It may also mean ripe as in for a fruit or "in the prime of life, young, and vigorous" for

1386-430: A three-hinged bridge has hinged in all three locations. Most modern arch bridges are made from reinforced concrete . This type of bridge is suitable where a temporary centring may be erected to support the forms, reinforcing steel, and uncured concrete. When the concrete is sufficiently set the forms and falseworks are then removed. It is also possible to construct a reinforced concrete arch from precast concrete , where

1485-746: Is Syria, with which Turkey had cut its relations after the start of the Syrian civil war . There are disputes with Greece over maritime boundaries and with Cyprus . In 2018, the Turkish military and the Turkish-backed forces began an operation in Syria aimed at ousting US-backed YPG (which Turkey considers to be an offshoot of the outlawed PKK ) from the enclave of Afrin . Turkey has also conducted airstrikes in Iraqi Kurdistan , which

1584-534: Is a unitary presidential republic . Turkey is a founding member of the OECD , G20 , and Organization of Turkic States . With a geopolitically significant location, Turkey is a regional power and an early member of NATO . An EU candidate , Turkey is part of the EU Customs Union , CoE , OIC , and TURKSOY . Turkey has coastal plains, a high central plateau , and various mountain ranges; its climate

1683-428: Is a masonry, or stone, bridge where each successively higher course (layer) cantilevers slightly more than the previous course. The steps of the masonry may be trimmed to make the arch have a rounded shape. The corbel arch does not produce thrust, or outward pressure at the bottom of the arch, and is not considered a true arch . It is more stable than a true arch because it does not have this thrust. The disadvantage

1782-620: Is divided into districts ( ilçe ), for a total of 973 districts. Turkey is also subdivided into 7 regions ( bölge ) and 21 subregions for geographic, demographic and economic measurements, surveys and classifications; this does not refer to an administrative division. Turkey is a presidential republic within a multi-party system . The current constitution was adopted in 1982 . In the Turkish unitary system, citizens are subject to three levels of government : national, provincial, and local. The local government 's duties are commonly split between municipal governments and districts, in which

1881-442: Is temperate with harsher conditions in the interior. Home to three biodiversity hotspots , Turkey is prone to frequent earthquakes and is highly vulnerable to climate change . Turkey has a universal healthcare system , growing access to education , and increasing levels of innovativeness . It is a leading TV content exporter. With 21 UNESCO World Heritage sites, 30 UNESCO intangible cultural heritage inscriptions, and

1980-432: Is that this type of arch is not suitable for large spans. In some locations it is necessary to span a wide gap at a relatively high elevation, such as when a canal or water supply must span a valley. Rather than building extremely large arches, or very tall supporting columns (difficult using stone), a series of arched structures are built one atop another, with wider structures at the base. Roman civil engineers developed

2079-476: Is the Main Opposition Leader . The last parliamentary and presidential elections were in 2023. The Constitutional Court can strip the public financing of political parties that it deems anti-secular or having ties to terrorism , or ban their existence altogether. The electoral threshold for political parties at national level is seven percent of the votes. Smaller parties can avoid

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2178-652: Is the Mycenaean Arkadiko Bridge in Greece from about 1300 BC. The stone corbel arch bridge is still used by the local populace. The well-preserved Hellenistic Eleutherna Bridge has a triangular corbel arch. The 4th century BC Rhodes Footbridge rests on an early voussoir arch. Although true arches were already known by the Etruscans and ancient Greeks , the Romans were – as with

2277-402: Is used they are mortared together and the mortar is allowed to set before the falsework is removed. Traditional masonry arches are generally durable, and somewhat resistant to settlement or undermining. However, relative to modern alternatives, such bridges are very heavy, requiring extensive foundations . They are also expensive to build wherever labor costs are high. The corbel arch bridge

2376-644: The Kayı tribe of the Oghuz Turks . Ottomans started annexing the nearby Turkish beyliks (principalities) in Anatolia and expanded into the Balkans . Mehmed II completed Ottoman conquest of the Byzantine Empire by capturing its capital, Constantinople , on 29 May 1453. Selim I united Anatolia under Ottoman rule. Turkification continued as Ottomans mixed with various indigenous people in Anatolia and

2475-690: The 1913 coup d'état , the Three Pashas took control of the Ottoman government. The Ottoman Empire entered World War I on the side of the Central Powers and was ultimately defeated. During the war, the empire's Armenian subjects were deported to Syria as part of the Armenian genocide . As a result, an estimated 600,000 to more than 1 million, or up to 1.5 million Armenians were killed. The Turkish government has refused to acknowledge

2574-716: The Allies in the aftermath of World War I initiated the Turkish National Movement . Under the leadership of Mustafa Kemal Pasha , a military commander who had distinguished himself during the Battle of Gallipoli , the Turkish War of Independence (1919–1923) was waged with the aim of revoking the terms of the Treaty of Sèvres (1920). The Turkish Provisional Government in Ankara , which had declared itself

2673-769: The Armistice of Mudanya on 11 October 1922. On 1 November 1922, the Turkish Parliament in Ankara formally abolished the Sultanate, thus ending 623 years of monarchical Ottoman rule. The Treaty of Lausanne of 24 July 1923, which superseded the Treaty of Sèvres, led to the international recognition of the sovereignty of the new Turkish state as the successor state of the Ottoman Empire. On 4 October 1923,

2772-414: The Balkans , Caucasus , and Crimea . Under the control of the Three Pashas , the Ottoman Empire entered World War I in 1914, during which the Ottoman government committed genocides against its Armenian , Greek , and Assyrian subjects. Following Ottoman defeat, the Turkish War of Independence resulted in the abolition of the sultanate and the signing of the Treaty of Lausanne . The Republic

2871-749: The Cold War 's start. Following threats from the Soviet Union , Turkey sought to ally with the United States and joined NATO in 1952. Overall, Turkey aims for good relations with Central Asia , the Caucasus , Russia, the Middle East , and Iran. With the West, Turkey also aims to keep its arrangements. By trading with the east and joining the EU, Turkey pursues economic growth. Turkey joined

2970-603: The EEC in 1987, joined the European Union Customs Union in 1995 and started accession negotiations with the European Union in 2005. Customs Union had an important impact on the Turkish manufacturing sector. In 2014, prime minister Recep Tayyip Erdoğan won Turkey's first direct presidential election . On 15 July 2016, an unsuccessful coup attempt tried to oust the government. According to

3069-480: The European Union Customs Union in 1995, but its EU accession talks are frozen as of 2024. Turkey has been called an emerging power, a middle power , and a regional power . Turkey has sought closer relations with the Central Asian Turkic states after the breakup of the Soviet Union. Closer relations with Azerbaijan , a culturally close country, was achieved. Turkey is a founding member of

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3168-515: The Galatians . When Pergamon requested assistance in its conflict with the Seleucids, Rome intervened in Anatolia in the second century BC. Without an heir, Pergamum's king left the kingdom to Rome, which was annexed as province of Asia . Roman influence grew in Anatolia afterwards. Following Asiatic Vespers massacre, and Mithridatic Wars with Pontus , Rome emerged victorious. Around

3267-701: The General Directorate of Security , the Gendarmerie General Command and the Coast Guard Command . In the years of government by the Justice and Development Party and Erdoğan, particularly since 2013, the independence and integrity of the Turkish judiciary has increasingly been said to be in doubt by institutions, parliamentarians and journalists both within and outside of Turkey, because of political interference in

3366-619: The International Organization of Turkic Culture and Organization of Turkic States . It is also a member of Organization for Security and Cooperation in Europe , Council of Europe , and Organisation of Islamic Cooperation . Following the Arab Spring , Turkey had problems with countries such as United Arab Emirates, Saudi Arabia, and Egypt. Relations with these countries have improved since then. The exception

3465-739: The Ionian School of philosophy , thereby laying the foundations of rationalism and Western philosophy . Cyrus attacked eastern Anatolia in 547 BC, and Achaemenid Empire eventually expanded into western Anatolia . In the east, the Armenian province was part of the Achaemenid Empire. Following the Greco-Persian Wars , the Greek city-states of the Anatolian Aegean coast regained independence, but most of

3564-558: The Moors in the 12th century, the pontoon bridge managed to exist for seven centuries due to later repairs. This article about a bridge in Spain is a stub . You can help Misplaced Pages by expanding it . This article about a building or structure in the Province of Seville is a stub . You can help Misplaced Pages by expanding it . Arch bridge Possibly the oldest existing arch bridge

3663-584: The Ottoman Empire's name . In December 2021, President Recep Tayyip Erdoğan called for expanded official usage of Türkiye , saying that Türkiye "represents and expresses the culture, civilization, and values of the Turkish nation in the best way". In May 2022, the Turkish government requested the United Nations and other international organizations to use Türkiye officially in English;

3762-603: The Proto-Turkic language originated in Central-East Asia. Initially, Proto- Turkic speakers were potentially both hunter-gatherers and farmers; they later became nomadic pastoralists . Early and medieval Turkic groups exhibited a wide range of both East Asian and West-Eurasian physical appearances and genetic origins, in part through long-term contact with neighboring peoples such as Iranic , Mongolic , Tocharian , Uralic , and Yeniseian peoples. During

3861-617: The Second Balkan War (1913). In the 19th and early 20th centuries, persecution of Muslims during the Ottoman contraction and in the Russian Empire resulted in estimated 5 million deaths, with more than 3 million in Balkans; the casualties included Turks. Five to seven or seven to nine million refugees migrated into modern-day Turkey from the Balkans , Caucasus , Crimea , and Mediterranean islands, shifting

3960-414: The Sheikh Said rebellion in 1925 and the Dersim rebellion in 1937. İsmet İnönü became the country's second president following Atatürk's death in 1938. In 1939, the Republic of Hatay voted in favor of joining Turkey with a referendum. Turkey remained neutral during almost all of World War II , but entered the war on the side of the Allies on 23 February 1945 . Later that year, Turkey became

4059-407: The Supreme Electoral Council lifted a rule that required each ballot to have an official stamp. The opposition parties claimed that as many as 2.5 million ballots without a stamp were accepted as valid. Turkey has a unitary structure in terms of public administration, and the provinces are subordinate to the central government in Ankara . In province centers the government is represented by

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4158-406: The Turkification process in Anatolia; there were Turkic/Turkish migrations, intermarriages, and conversions into Islam. The shift took several centuries and happened gradually. Members of Islamic mysticism orders, such as Mevlevi Order , played a role in the Islamization of the diverse people of Anatolia. Seljuk expansion was one of the reasons for the Crusades . In 13th century, there

4257-407: The Yabgu Khaganate . In 1040, the Seljuks defeated the Ghaznavids at the Battle of Dandanaqan and established the Seljuk Empire in Greater Khorasan . Baghdad , the Abbasid Caliphate 's capital and center of the Islamic world , was taken by Seljuks in 1055. Given the role Khurasani traditions played in art, culture, and political traditions in the empire, the Seljuk period is described as

4356-598: The adoption of Christianity as the state religion , and the predominance of Greek instead of Latin , modern historians continue to make a distinction between the earlier Roman Empire and the later Byzantine Empire . In the early Byzantine Empire period, the Anatolian coastal areas were Greek speaking. In addition to natives, interior Anatolia had diverse groups such as Goths , Celts , Persians and Jews . Interior Anatolia had been "heavily Hellenized". Anatolian languages eventually became extinct after Hellenization of Anatolia. According to historians and linguists,

4455-420: The fall of Constantinople to the Ottoman Empire in 1453. During most of its existence, the empire remained the most powerful economic, cultural, and military force in the Mediterranean world . The term Byzantine Empire was only coined following the empire's demise; its citizens referred to the polity as the "Roman Empire" and to themselves as Romans . Due to the imperial seat's move from Rome to Byzantium ,

4554-405: The right to vote and stand as a candidate at elections. Universal suffrage for both sexes has been applied throughout Turkey since 1934. In Turkey, turnout rates of both local and general elections are high compared to many other countries, which usually stands higher than 80%. President Recep Tayyip Erdoğan is currently serving as the head of state and head of government . Özgür Özel

4653-579: The vault and the dome – the first to fully realize the potential of arches for bridge construction. A list of Roman bridges compiled by the engineer Colin O'Connor features 330 Roman stone bridges for traffic, 34 Roman timber bridges and 54 Roman aqueduct bridges , a substantial part still standing and even used to carry vehicles. A more complete survey by the Italian scholar Vittorio Galliazzo found 931 Roman bridges, mostly of stone, in as many as 26 countries (including former Yugoslavia ). Roman arch bridges were usually semicircular , although

4752-516: The 1st century BC, Rome expanded into parts of Pontus and Bithynia , while turning rest of Anatolian states into Roman satellites. Several conflicts with Parthians ensued , with peace and wars alternating. According to Acts of the Apostles , early Christian Church had significant growth in Anatolia because of St Paul's efforts. Letters from St. Paul in Anatolia comprise the oldest Christian literature . Under Roman authority, ecumenical councils such as Council of Nicaea (Iznik) in 325 served as

4851-415: The 9th and 10th centuries CE, the Oghuz were a Turkic group that lived in the Caspian and Aral steppes. Partly due to pressure from the Kipchaks , the Oghuz migrated into Iran and Transoxiana . They mixed with Iranic-speaking groups in the area and converted to Islam . Oghuz Turks were also known as Turkoman . The Seljuks originated from the Kınık branch of the Oghuz Turks who resided in

4950-412: The Allied occupation of Turkey ended with the withdrawal of the last Allied troops from Istanbul . The Turkish Republic was officially proclaimed on 29 October 1923 in Ankara, the country's new capital. The Lausanne Convention stipulated a population exchange between Greece and Turkey . Mustafa Kemal became the republic's first president and introduced many reforms . The reforms aimed to transform

5049-415: The Anatolian interior, which met resistance in some places. Following Alexander's death, the Seleucids ruled large parts of Anatolia, while native Anatolian states emerged in the Marmara and Black Sea areas. In eastern Anatolia, the kingdom of Armenia appeared. In third century BC, Celts invaded central Anatolia and continued as a major ethnic group in the area for around 200 years. They were known as

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5148-400: The Balkans. The Ottoman Empire was a global power during the reigns of Selim I and Suleiman the Magnificent . In the 16th and 17th centuries, Sephardic Jews moved into Ottoman Empire following their expulsion from Spain. From the second half of the 18th century onwards, the Ottoman Empire began to decline . The Tanzimat reforms, initiated by Mahmud II in 1839, aimed to modernize

5247-447: The Great ; Hellenization continued during the Roman and Byzantine eras. The Seljuk Turks began migrating into Anatolia in the 11th century, starting the Turkification process. The Seljuk Sultanate of Rum ruled Anatolia until the Mongol invasion in 1243, when it disintegrated into Turkish principalities . Beginning in 1299, the Ottomans united the principalities and expanded ; Mehmed II conquered Istanbul in 1453 . During

5346-509: The Hittite kingdom was disintegrating, further waves of Indo-European peoples migrated from southeastern Europe, which was followed by warfare. The Thracians were also present in modern-day Turkish Thrace . It is not known if the Trojan war is based on historical events. Troy's Late Bronze Age layers matches most with Iliad 's story. Around 750 BC, Phrygia had been established, with its two centers in Gordium and modern-day Kayseri . Phrygians spoke an Indo-European language, which

5445-424: The Ottoman Empire led to a rise in nationalist sentiment among its various subject peoples , leading to increased ethnic tensions which occasionally burst into violence, such as the Hamidian massacres of Armenians , which claimed up to 300,000 lives. Ottoman territories in Europe ( Rumelia ) were lost in the First Balkan War (1912–1913). Ottomans managed to recover some territory in Europe, such as Edirne , in

5544-431: The Ottoman state in line with the progress that had been made in Western Europe. The Ottoman constitution of 1876 was the first among Muslim states, but was short-lived . As the empire gradually shrank in size, military power and wealth; especially after the Ottoman economic crisis and default in 1875 which led to uprisings in the Balkan provinces that culminated in the Russo-Turkish War (1877–1878) . The decline of

5643-435: The President, General Staff , Air Force , Naval Force , and Land Force usually report to the Minister of National Defence. The Gendarmerie General Command and the Coast Guard Command are under the jurisdiction of the Ministry of the Interior . Military service is required for 6–12 months for men, which is reduced to one month after paying a fee. Turkey does not recognize conscientious objection and does not offer

5742-418: The Republic, Turkey adopted a civil law legal system, replacing Sharia -derived Ottoman law . The Civil Code , adopted in 1926, was based on the Swiss Civil Code of 1907 and the Swiss Code of Obligations of 1911. Although it underwent a number of changes in 2002, it retains much of the basis of the original Code. The Criminal Code , originally based on the Italian Criminal Code , was replaced in 2005 by

5841-402: The Turkish government, there are 13,251 arrested or convicted people in jail as of 2024, related to the 2016 coup attempt. With a referendum in 2017 , the parliamentary republic was replaced by an executive presidential system . The office of the prime minister was abolished, and its powers and duties were transferred to the president. On the referendum day, while the voting was still underway,

5940-926: The UN agreed. Present-day Turkey has been inhabited by modern humans since the late Paleolithic period and contains some of the world's oldest Neolithic sites. Göbekli Tepe is close to 12,000 years old. Parts of Anatolia include the Fertile Crescent , an origin of agriculture . Other important Anatolian Neolithic sites include Çatalhöyük and Alaca Höyük . Neolithic Anatolian farmers differed genetically from farmers in Iran and Jordan Valley . These early Anatolian farmers also migrated into Europe , starting around 9,000 years ago. Troy's earliest layers go back to around 4500 BC. Anatolia's historical records start with clay tablets from approximately around 2000 BC that were found in modern-day Kültepe . These tablets belonged to an Assyrian trade colony . The languages in Anatolia at that time included Hattian, Hurrian, Hittite , Luwian , and Palaic . Hattian

6039-436: The abutments of an arch bridge. The deck is suspended from the arch. The arch is in compression, in contrast to a suspension bridge where the catenary is in tension. A tied-arch bridge can also be a through arch bridge. An arch bridge with hinges incorporated to allow movement between structural elements. A single-hinged bridge has a hinge at the crown of the arch , a two-hinged bridge has hinges at both springing points and

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6138-525: The acclaimed Florentine segmental arch bridge Ponte Vecchio (1345) combined sound engineering (span-to-rise ratio of over 5.3 to 1) with aesthetical appeal. The three elegant arches of the Renaissance Ponte Santa Trinita (1569) constitute the oldest elliptic arch bridge worldwide. Such low rising structures required massive abutments , which at the Venetian Rialto bridge and the Fleischbrücke in Nuremberg (span-to-rise ratio 6.4:1) were founded on thousands of wooden piles, partly rammed obliquely into

6237-491: The age of 65. Turkish politics have become increasingly associated with democratic backsliding , being described as a competitive authoritarian system. Elections in Turkey are held for six functions of government: presidential (national), parliamentary (national), municipality mayors (local), district mayors (local), provincial or municipal council members (local), and muhtars (local). Referendums are also held occasionally. Every Turkish citizen who has turned 18 has

6336-416: The arch and the deck is known as the spandrel . If the spandrel is solid, usually the case in a masonry or stone arch bridge, the bridge is called a closed-spandrel deck arch bridge . If the deck is supported by a number of vertical columns rising from the arch, the bridge is known as an open-spandrel deck arch bridge . The Alexander Hamilton Bridge is an example of an open-spandrel arch bridge. Finally, if

6435-400: The arch is built in two halves which are then leaned against each other. Many modern bridges, made of steel or reinforced concrete, often bear some of their load by tension within their structure. This reduces or eliminates the horizontal thrust against the abutments and allows their construction on weaker ground. Structurally and analytically they are not true arches but rather a beam with

6534-422: The arch supports the deck only at the top of the arch, the bridge is called a cathedral arch bridge . This type of bridge has an arch whose base is at or below the deck, but whose top rises above it, so the deck passes through the arch. The central part of the deck is supported by the arch via suspension cables or tie bars, as with a tied-arch bridge . The ends of the bridge may be supported from below, as with

6633-515: The bridge an unusually flat profile unsurpassed for more than a millennium. Trajan's bridge over the Danube featured open- spandrel segmental arches made of wood (standing on 40 m-high (130 ft) concrete piers). This was to be the longest arch bridge for a thousand years both in terms of overall and individual span length, while the longest extant Roman bridge is the 790 m-long (2,590 ft) long Puente Romano at Mérida . The late Roman Karamagara Bridge in Cappadocia may represent

6732-432: The center of the Ottoman Empire to Anatolia. In addition to a small number of Jews, the refugees were overwhelmingly Muslim; they were both Turkish and non-Turkish people, such as Circassians and Crimean Tatars . Paul Mojzes has called the Balkan Wars an "unrecognized genocide", where multiple sides were both victims and perpetrators. Circassian refugees included the survivors of the Circassian genocide . Following

6831-414: The design and constructed highly refined structures using only simple materials, equipment, and mathematics. This type is still used in canal viaducts and roadways as it has a pleasing shape, particularly when spanning water, as the reflections of the arches form a visual impression of circles or ellipses. This type of bridge comprises an arch where the deck is completely above the arch. The area between

6930-502: The earliest surviving bridge featuring a pointed arch. In medieval Europe, bridge builders improved on the Roman structures by using narrower piers , thinner arch barrels and higher span-to-rise ratios on bridges. Gothic pointed arches were also introduced, reducing lateral thrust, and spans increased as with the eccentric Puente del Diablo (1282). The 14th century in particular saw bridge building reaching new heights. Span lengths of 40 m (130 ft), previously unheard of in

7029-436: The electoral threshold by forming an alliance with other parties. Independent candidates are not subject to an electoral threshold. On the right side of the Turkish political spectrum , parties like the Democrat Party , Justice Party , Motherland Party , and Justice and Development Party became the most popular political parties in Turkey, winning numerous elections. Turkish right-wing parties are more likely to embrace

7128-545: The end of the 20th century, the prominent leaders in Turkish politics who achieved multiple election victories were Süleyman Demirel , Bülent Ecevit and Turgut Özal . PKK started a "campaign of terrorist attacks on civilian and military targets" in the 1980s. It is designated as a terrorist organization by Turkey, the United States, and the European Union. Tansu Çiller became the first female prime minister of Turkey in 1993. Turkey applied for full membership of

7227-501: The events as genocide and states that Armenians were only "relocated " from the eastern war zone. Genocidal campaigns were also committed against the empire's other minority groups such as the Assyrians and Greeks . Following the Armistice of Mudros in 1918, the victorious Allied Powers sought the partition of the Ottoman Empire through the 1920 Treaty of Sèvres . The occupation of Istanbul (1918) and İzmir (1919) by

7326-668: The executive and legislative officials are elected by a plurality vote of citizens by district. The government comprises three branches: first is the legislative branch, which is Grand National Assembly of Turkey ; second is the executive branch, which is the President of Turkey ; and third is the judicial branch, which includes the Constitutional Court , the Court of Cassation and Court of Jurisdictional Disputes . The Parliament has 600 seats, distributed among

7425-499: The grounds to counteract more effectively the lateral thrust. In China, the oldest existing arch bridge is the Zhaozhou Bridge of 605 AD, which combined a very low span-to-rise ratio of 5.2:1, with the use of spandrel arches (buttressed with iron brackets). The Zhaozhou Bridge, with a length of 167 feet (51 m) and span of 123 feet (37 m), is the world's first wholly stone open-spandrel segmental arch bridge, allowing

7524-443: The history of masonry arch construction, were now reached in places as diverse as Spain ( Puente de San Martín ), Italy ( Castelvecchio Bridge ) and France ( Devil's bridge and Pont Grand ) and with arch types as different as semi-circular, pointed and segmental arches. The bridge at Trezzo sull'Adda , destroyed in the 15th century, even featured a span length of 72 m (236 ft), not matched until 1796. Constructions such as

7623-774: The interior stayed part of the Achaemenid Empire. Two of the Seven Wonders of the Ancient World , the Temple of Artemis in Ephesus, and the Mausoleum of Halicarnassus , were located in Anatolia. Following the victories of Alexander in 334 BC and 333 BC , the Achaemenid Empire collapsed and Anatolia became part of the Macedonian Empire . This led to increasing cultural homogeneity and Hellenization of

7722-499: The latter founded by colonists from Megara in the seventh century BCE. These settlements were grouped as Aeolis , Ionia , and Doris , after the specific Greek groups that settled them. Further Greek colonization in Anatolia was led by Miletus and Megara in 750–480 BC. The Greek cities along the Aegean prospered with trade, and saw remarkable scientific and scholarly accomplishments. Thales and Anaximander from Miletus founded

7821-534: The legitimate government of the country on 23 April 1920 , started to formalize the legal transition from the old Ottoman into the new Republican political system. The Ankara Government engaged in armed and diplomatic struggle. In 1921–1923, the Armenian, Greek, French, and British armies had been expelled. The military advance and diplomatic success of the Ankara Government resulted in the signing of

7920-557: The old religion-based and multi-communal Ottoman monarchy into a Turkish nation state that would be governed as a parliamentary republic under a secular constitution . Women gained the right to vote nationally in 1934. With the Surname Law , the Turkish Parliament bestowed upon Kemal the honorific surname "Atatürk" ( Father Turk ). Atatürk's reforms caused discontent in some Kurdish and Zaza tribes leading to

8019-479: The only ones to construct bridges with concrete , which they called Opus caementicium . The outside was usually covered with brick or ashlar , as in the Alcántara Bridge . The Romans also introduced segmental arch bridges into bridge construction. The 330 m-long (1,080 ft) Limyra Bridge in southwestern Turkey features 26 segmental arches with an average span-to-rise ratio of 5.3:1, giving

8118-476: The principles of political ideologies such as conservatism , nationalism or Islamism . On the left side of the spectrum, parties like the Republican People's Party , Social Democratic Populist Party and Democratic Left Party once enjoyed the largest electoral success. Left-wing parties are more likely to embrace the principles of socialism , Kemalism or secularism . With the founding of

8217-464: The promotion of judges and prosecutors and in their pursuit of public duty. Turkey's constant foreign policy goal is to pursue its national interests. These interests are mainly growing the economy, and maintaining security from internal terrorist and external threats. After the establishment of the Republic, Atatürk and İnönü followed the " peace at home, peace in the world " principle until

8316-453: The province governors ( vali ) and in towns by the governors ( kaymakam ). Other senior public officials are also appointed by the central government, except for the mayors ( belediye başkanı ) who are elected by the constituents. Turkish municipalities have local legislative bodies ( belediye meclisi ) for decision-making on municipal issues. Turkey is subdivided into 81 provinces ( il or vilayet ) for administrative purposes. Each province

8415-445: The provinces proportionally to the population . The Parliament and the president serve a five-year terms, with elections on the same day. The president is elected by direct vote and cannot run for re-election after two terms, unless the parliament calls early presidential elections during the second term. The Constitutional Court is composed of 15 members, elected for single 12-year terms. They are obliged to retire when they are over

8514-494: The reigns of Selim I and Suleiman the Magnificent , the Ottoman Empire became a global power . From 1789 onwards, the empire saw a major transformation , reforms , and centralization while its territory declined . In the 19th and early 20th centuries, persecution of Muslims during the Ottoman contraction and in the Russian Empire resulted in large-scale loss of life and mass migration into modern-day Turkey from

8613-639: The same in size and shape. The Romans built both single spans and lengthy multiple arch aqueducts , such as the Pont du Gard and Segovia Aqueduct . Their bridges featured from an early time onwards flood openings in the piers, e.g. in the Pons Fabricius in Rome (62 BC), one of the world's oldest major bridges still standing. Roman engineers were the first and until the Industrial Revolution

8712-402: The shape of an arch. See truss arch bridge for more on this type. A modern evolution of the arch bridge is the long-span through arch bridge . This has been made possible by the use of light materials that are strong in tension such as steel and prestressed concrete. "The Romans were the first builders in Europe, perhaps the first in the world, fully to appreciate the advantages of the arch,

8811-839: The vault and the dome." Turkey Turkey , officially the Republic of Türkiye , is a country mainly located in Anatolia in West Asia , with a smaller part called East Thrace in Southeast Europe . It borders the Black Sea to the north; Georgia , Armenia , Azerbaijan , and Iran to the east; Iraq , Syria , and the Mediterranean Sea to the south; and the Aegean Sea , Greece , and Bulgaria to

8910-403: The west. Turkey is home to over 85 million people; most are ethnic Turks , while ethnic Kurds are the largest ethnic minority . Officially a secular state , Turkey has a Muslim-majority population. Ankara is Turkey's capital and second-largest city , while Istanbul is its largest city and economic and financial center. Other major cities include İzmir , Bursa , and Antalya . Turkey

9009-402: Was Jean-Rodolphe Perronet , who used much narrower piers, revised calculation methods and exceptionally low span-to-rise ratios. Different materials, such as cast iron , steel and concrete have been increasingly used in the construction of arch bridges. Stone, brick and other such materials are strong in compression and somewhat so in shear , but cannot resist much force in tension . As

9108-639: Was a language indigenous to Anatolia, with no known modern-day connections. Hurrian language was used in northern Syria . Hittite, Palaic, and Luwian languages were "the oldest written Indo-European languages ", forming the Anatolian sub-group . Hattian rulers were gradually replaced by Hittite rulers. The Hittite kingdom was a large kingdom in Central Anatolia, with its capital of Hattusa . It co-existed in Anatolia with Palaians and Luwians , approximately between 1700 and 1200 BC. As

9207-479: Was a second significant wave of Turkic migration, as people fled Mongol expansion. Seljuk sultanate was defeated by the Mongols at the Battle of Köse Dağ in 1243 and disappeared by the beginning of the 14th century. It was replaced by various Turkish principalities. Based around Söğüt , Ottoman Beylik was founded by Osman I in the early 14th century. According to Ottoman chroniclers, Osman descended from

9306-630: Was called the "State of the Turks" ( Dawlat at-Turk , or Dawlat al-Atrāk , or Dawlat-at-Turkiyya ). Turkestan, also meaning the "land of the Turks", was used for a historic region in Central Asia . Middle English usage of Turkye or Turkeye is found in The Book of the Duchess (written in 1369–1372) to refer to Anatolia or the Ottoman Empire . The modern spelling Turkey dates back to at least 1719. The bird called turkey

9405-429: Was closer to Greek than Anatolian languages. Phrygians shared Anatolia with Neo-Hittites and Urartu . Luwian-speakers were probably the majority in various Anatolian Neo-Hittite states. Urartians spoke a non-Indo-European language and their capital was around Lake Van . Urartu and Phrygia fell in seventh century BC. They were replaced by Carians , Lycians and Lydians . These three cultures "can be considered

9504-632: Was criticized by Iraq for violating its sovereignty and killing civilians. Diplomatic relations with Israel were damaged after the Gaza flotilla raid , normalized in 2016, and cut again following the Israeli invasion of the Gaza Strip . In 2024, Turkey stopped trading with Israel. Turkish Armed Forces is responsible for defense against foreign threats. While the Commander-in-Chief is

9603-538: Was first inhabited by modern humans during the Late Paleolithic . Home to important Neolithic sites like Göbekli Tepe and some of the earliest farming areas , present-day Turkey was inhabited by various ancient peoples . The Hattians were assimilated by the Anatolian peoples , such as the Hittites . Classical Anatolia transitioned into cultural Hellenization following the conquests of Alexander

9702-412: Was named as such due to trade of guineafowl from Turkey to England. The name Turkey has been used in international treaties referring to the Ottoman Empire. With the Treaty of Alexandropol , the name Türkiye entered international documents for the first time. In the treaty signed with Afghanistan in 1921, the expression Devlet-i Âliyye-i Türkiyye ("Sublime Turkish State") was used, likened to

9801-469: Was proclaimed on 29 October 1923, modelled on the reforms initiated by the country's first president, Mustafa Kemal Atatürk . Turkey remained neutral during most of World War II , but was involved in the Korean War . Several military interventions interfered with the transition to a multi-party system. Turkey is an upper-middle-income and emerging country ; its economy is the world's 17th-largest by nominal and 12th-largest by PPP-adjusted GDP . It

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