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Bosporus

narrow strait in northwestern Turkey

32 dated entries naming Bosporus, drawn from 30 separate years between 513 BCE and 1988 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.

Also written as Bosphorous, Bosphorus, Bosphorus Strait, Bósporos in the source articles; Wikipedia redirects those to the same subject, so their entries are on this page.

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6th century BC

  • 513 BCEDarius the Great subdues the Getae and east Thrace in his war against the Scythians. To accomplish this, he builds a massive pontoon bridge across the Bosphorus Strait.source

5th century BC

  • 476 BCECimon of Athens increases his power at the expense of Themistocles. He ousts Pausanias and the Spartans from the area around the Bosporus. The Spartans, hearing that Pausanias is intriguing with the Persians, recall him and he is "disciplined".source
  • 409 BCEAlcibiades recaptures Byzantium, ending the city's rebellion from Athens. This action completes Athenian control of the Bosporus which secures the Athenian supply route for grain from the Bosporan Kingdom in the Black Sea region.source

1st century BC

  • 47 BCEAugust 2 – Caesar defeats Pharnaces II of Pontus, king of the Bosphorus, in the Battle of Zela (the war Caesar tersely describes as veni, vidi, vici).source

3rd century

  • 269Second Gothic invasion: The Goths and other German tribes attack Bosphorean towns on the coast of the Black Sea. Some 2,000 ships and 320,000 men from the Danube enter Roman territory. Emperor Claudius II defeats the invaders and receives the title Gothicus for his triumph. Many of the prisoners will serve in the Roman legions and settle in vacant lands in the Danubian provinces.source
  • 276Florianus becomes Roman Emperor with the support of the Senate, but a general in the east, Marcus Aurelius Probus, usurps power against him. Florianus breaks off his campaign against the Goths and marches east from the Bosporus with support from the Roman legions in Britain, Gaul, Spain and Italy.source

4th century

  • 313Emperor Maximinus Daza crosses the Bosphorus with an army of 70,000 men and lays siege to Heraclea in Thrace. He captures the city after eight days.source
  • 324July – Battle of the Hellespont: Flavius Julius Crispus, the designated heir of his father Constantine, destroys the naval fleet of Licinius in the Dardanelles, allowing Constantine to cross over the Bosphorus into Asian provinces. Byzantium is besieged and Licinius assembles a second military force, under his newly elevated co-emperor Martinian at Lampsacus (modern-day Lapseki).source
  • 330May 11 – Emperor Constantine the Great dedicates the Column of Constantine and Constantinople, or Nova Roma (modern-day Istanbul). He had spent four years expanding the city of Byzantium, having chosen the site for its strategic location on the Bosporus. The city became the capital of the Byzantine Empire.source
  • 399Gainas, a Gothic leader, is made magister militum and forms an alliance with deserters of Tribigild along the Bosphorus. He proclaims himself co-regent (usurper), and installs his forces in Constantinople. Gainas deposes anti-Gothic officials and has Eutropius, imperial advisor (cubicularius), executed.source

7th century

  • 617Byzantine-Sassanid War: The Persian army under Shahin Vahmanzadegan conquers Chalcedon in Anatolia, and reaches the Bosporus, threatening Constantinople. Emperor Heraclius begins peace negotiations, promising an annual tribute of 1,000 talents of gold and silver. Shahin withdraws with his army to Syria, to focus on the invasion of Egypt.source
  • 626Siege of Constantinople: A horde of Avars, consisting of about 80,000 men (including large contingents of Slavs, Bulgars, and other "barbarians"), attack the walls of Constantinople. A small Persian army arrives on the Bosphorus, on the Asiatic side. The Theodosian Walls are stormed with the most up-to-date siege equipment, in the form of traction trebuchets. The Avars also have mobile armoured shelters (medieval 'sows') and siege towers; the latter are covered in hides for fire protection. The defense of the capital (12,000 well-trained Byzantine troops) is in the hands of Patriarch Sergius I and Bonus (magister militum).source
  • 669Spring – Arab forces that have taken Chalcedon, on the Asian shore of the Bosporus, threaten the Byzantine capital Constantinople. The Muslim-Arabs are decimated by famine and disease. Yazid, the Arab commander, retreats to the island of Cyzicus (modern Turkey).source

8th century

  • 717August 15 – Siege of Constantinople: Maslama begins a combined land and sea effort to capture Constantinople. The capital controls the Bosporus, access between the Mediterranean and Black Sea, and is defended by a garrison of roughly 25,000 men. Leo III orders the granaries be restocked and siege engines installed. The Arab besiegers are suffering immense losses due to disease, and from attrition of siege warfare.source
  • 718August 15 – Siege of Constantinople: A Bulgar relief force attacks the siege lines at Constantinople, on the west side of the Bosporus. Contemporary chroniclers report that at least 22,000–32,000 Arabs are killed during the Bulgarian attacks. Caliph Umar II is forced to lift the siege after 13 months; the Muslim army attempts to withdraw back through Anatolia, while the rest escapes by sea in the remaining vessels. The Arab fleet suffers further casualties to storms, and an eruption of the volcano of Thera. According to Arab sources 150,000 Muslims perish during the campaign.source
  • 782Summer – Harun al-Rashid reaches as far as Chrysopolis, across the Bosporus Straits from the Byzantine capital, Constantinople. After the defection of the Armenian general Tatzates, Empress Irene accepts a three-year truce, including the annual payment of a tribute of 70,000 or 90,000 gold dinars, and the handing over of 10,000 silk garments. Harun releases all his captives (5,600 men), including chief minister Staurakios and other hostages.source

9th century

  • 860June 18 – Byzantine–Rus' War: A fleet of about 200 Rus' vessels sails into the Bosphorus, and starts pillaging the suburbs of Constantinople. The raiders set homes on fire, and drown and kill the citizens. Unable to do anything to repel the invaders, Patriarch Photios I urges his flock to implore the Theotokos to save the Byzantine capital. Having devastated the suburbs, the Rus' Vikings pass into the Sea of Marmara and attack the Isles of the Princes, plundering the local monasteries.source

10th century

  • 963July 2 – Nikephoros II Phokas is proclaimed emperor by his troops in Caesarea. He sends a fleet to secure the Bosphorus Strait against his enemies. Chief minister Joseph Bringas gathers support and closes the gates of Constantinople. General Marianos Argyros is killed in a riot, forcing Bringas to flee.source
  • 988Fall – Emperor Basil II, supported by a contingent of 6,000 Varangians (the future Varangian Guard), organizes the defences of Constantinople to meet a threat from the insurgents, Bardas Phokas the Younger and Bardas Skleros. Basil crosses the Bosphorus, and leads a surprise attack on the rebel camp of Kalokyros Delphinas, at Chrysopolis. Delphinas is captured and executed, either by crucifixion or by impalement (approximate date).source

11th century

  • 1049Spring – Pecheneg Revolt: Emperor Constantine IX decides to transfer 15,000 Pecheneg warriors from their positions in the Balkans to the eastern front. Upon approaching the Bosporus, the Pechenegs decide to turn back, and march through Bulgaria, until they reach the Byzantine city of Serdia. Later, joined by followers, the Pecheneg tribes raise the banner of revolt in Thrace.source
  • 1073Spring – Emperor Michael VII Doukas sends a Byzantine army to deal with Seljuk raiding in Cappadocia, supported with a mixed force of Norman and French mercenary heavy cavalry under Roussel de Bailleul. Roussel re-conquers some territory in Galatia and declares it an independent Norman state. Michael, enraged, sends another army led by his uncle, Caesar John Doukas and the veteran General Nikephoros Botaneiates to deal with the rising of the Norman threat in Asia minor. But the Byzantines are defeated and John is captured. Roussel marches with a force (3,000 men) across Bithynia to the Bosporus and sacks Chrysopolis, near Constantinople.source
  • 1096August 2–6 – The People's Crusade reorganize their forces and gather supplies. Alexios I advises Peter the Hermit to wait for reinforcements but he ignores the advice. The People's army (some 30,000 men) is transported across the Bosporus – by the Byzantine fleet to Civetot (modern Turkey).source

12th century

  • 1147September 10 – The German crusaders under Conrad III reach Constantinople, where there is a frosty exchange of letters between Conrad and Manuel I. The German forces make camp at Galata on the northern shore of the Golden Horn. Manuel orders that a full-scale effort must be made to transport the Germans, who are causing troubles by sacking the Philopatium, across the Bosporus.source
  • 1183Alexios II is compelled to condemn his own mother to death. In September, Andronikos Komenos is formally proclaimed Byzantine Emperor before the crowd on the terrace of the Church of Christ of the Chalke. By the end of the month, Andronikos orders Alexios' assassination; the young emperor is strangled in secret with a bow-string and his body thrown in the Bósporos.source

13th century

  • 1203June 23 – The Crusader fleet comes within sight of Constantinople, and enters the Bosporus. The Byzantine capital is defended by a garrison of 15,000 soldiers (including 5,000 men of the Varangian Guard), and a fleet of 20 galleys. On June 26, the Byzantine troops skirmish with the Crusader forces, who attack, without success, the cities of Chalcedon and Chrysopolis.source

14th century

  • 1302July 27 – Battle of Bapheus: To counter the Turkish threat at Nicomedia, Emperor Andronikos II Palaiologos sends a Byzantine force (some 2,000 men) to cross over the Bosporus to relieve the city. On the plain, Turkish forces (some 5,000 light cavalry) led by Sultan Osman I defeat the Byzantines, who are forced to withdraw to Nicomedia. After the battle, Andronikos loses control of the countryside of Bithynia, withdrawing to the forts. Meanwhile, Turkish forces capture Byzantine settlements, such as the coastal city of Gemlik.source
  • 1352Süleyman Pasha (son of Orhan) is probably granted control of Çimpe Castle on the Gallipoli peninsula by Emperor John VI Kantakouzenos, the first territory west of the Bosporus held by the Ottoman Empire.source

20th century

  • 1915March 14 – Constantinople Agreement: Britain, France and the Russian Empire agree to give Constantinople (Istanbul) and the Bosphorus to Russia in case of victory (the treaty is later nullified by the Bolshevik Revolution).source
  • 1936July 20 – The Montreux Convention Regarding the Regime of the Straits is signed in Montreux, allowing Turkey to fortify the Dardanelles and the Bosphorus, but guaranteeing free passage to ships of all nations in peacetime.source
  • 193620 July – Romania signs the Montreux Convention Regarding the Regime of the Straits governing the Bosporus and Dardanelles.source
  • 1988July 3 – The Fatih Sultan Mehmet Bridge in Istanbul, Turkey, is completed, providing the second connection between the continents of Europe and Asia over the Bosphorus.source
  • 19883 July – Second bridge over the Bosporus opens.source

Named in the same entries