The Ottoman sultan Bayezid I built the Bayezid Külliyesi ( Bayezid I theological complex ) in Bursa between 1390 and 1395 and the Ulu Cami ( Great Mosque ) between 1396 and 1400.

** Bayezid I Mosque and complex ( külliye )

Ordered by Sultan Bayezid I, the mosque was designed and built by architect Ali Neccar in 1396 – 1400.

Supposedly the twenty domes were built instead of the twenty separate mosques which Sultan Bayezid I had promised for winning the Battle of Nicopolis in 1396.

Bayezid I ( Ottoman: بايزيد اول, Turkish: Beyazıt, nicknamed Yıldırım ( Ottoman: ییلدیرم ), " the Thunderbolt "; 1354 – March 8, 1403 ) was the Sultan of the Ottoman Empire, from 1389 to 1402.

Bayezid ascended to the throne following the death of his father Murad I, who was killed by Serbian knight Miloš Obilić during ( June 15 ), or immediately after ( June 16 ), the Battle of Kosovo in 1389, by which Serbia became a vassal of the Ottoman Empire.

A manuscript of the Quran from the reign of Bayezid I.

* Yıldırım Bayezid I

br: Bayezid I

de: Bayezid I.

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gl: Bayezid I

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nl: Bayezid I

no: Bayezid I

pt: Bayezid I

sk: Bayezid I.

fi: Bayezid I

Upon the completion of this construction, Bayezid I demanded that John raze these new works, threatening war and the blinding of his son Manuel whom he held in captivity.

Lazar's young and weak successor Stefan Lazarevic ( 1389 – 1427 ) concluded a vassal agreement with Bayezid in 1390 to counter Hungarian moves into northern Serbia, while Vuk Brankovic, the last independent Serb prince, held out until 1392.

In 1391 however, John V was compelled to raze the fort by Sultan Bayezid I ( r. 1382 – 1402 ), who otherwise threatened to blind his son Manuel, whom he held captive.

In the fateful Battle of Ankara, on 20 July 1402, Bayezid was captured by Timur and the Ottoman army was overpowered.

Many writers claim that Bayezid was mistreated by the Timurids.

Rebellions in the east, such as that of the Qizilbash, plagued much of Bayezid II's reign and were often backed by the Shah of Persia, Ismail, who was eager to promote Shi ' ism to undermine the authority of the Ottoman state.

His other son, Yakub Bey, who was in charge of the other wing, was called to the Sultan's command center tent by Bayezid, but when Yakub Bey arrived he was strangled, leaving Bayezid as the sole claimant to the throne.

In 1398 and 1399, Boniface IX appealed to Christian Europe in favor of the Byzantine emperor Manuel II Palaeologus, threatened at Constantinople by Sultan Bayezid I, but there was little enthusiasm for a new crusade at such a time.

* May 3 – Mehmed II, Sultan of the Ottoman Empire dies and is succeeded by his son Bayezid II.

* September 17 – John VII Palaiologos seeks refuge with the Ottoman sultan Bayezid I after John V Palaiologos is restored by his son, Manuel, and the Republic of Venice.

The Ottomans, in a ferocious counter-attack led by Bayezid, pushed the Serbian forces back and then prevailed later in the day, routing the Serbian infantry.

The Sultan of the Ottoman Empire Bayezid I then invaded Syria which was regained by the Mamluk sultan Faraj when Timur died in 1405, but continually facing rebellions from local emirs, he was forced to abdicate in 1412.

These titles were known in Ottoman Turkish respectively as Hünkar-i Khanedan-i Âl-i Osman, Sultan us-Selatin and Khakan ( the latter enlarged as Khakan ül-Berreyn vel-Bahreyn by Mehmet II, Bayezid II and Selim I, meaning " Khan of Khans of the Two Lands ( Europe and Asia ) and the Two Seas ( Mediterranean and Indian )").

Ottoman külliye and hospital built by Bayezid II

The Ottoman Interregnum, or the Ottoman Civil War, ( 20 July 1402 – 5 July 1413 ) ( Fetret Devri in Turkish ) began on 20 July 1402, when chaos reigned in the Ottoman Empire following the defeat of Sultan Bayezid I by the Central Asian warlord Timur.

Meanwhile the other surviving son of Bayezid, Musa Çelebi, who was captured at the battle of Ankara, was released by Timur into the custody of Yakub of Germiyan Mûsa was freed, after Mehmed made a request for his brother's release.

It was built between 1393 and 1394 by the Ottoman sultan Bayezid I " The Thunderbolt " as part of his preparations for the Second Ottoman Siege of Constantinople, which took place in 1395.

A civil war ensued in Ottoman Empire between his sons Bayezid and Cem ; the latter, being worsted, fled to the knights of Rhodes, by whom he was kept in custody in France.

forces of Bayezid are put at 90, 000 by Sad ad-Din ( tr.

Another relic of him was sent by Sultan Bayezid II in 1489 to King Matthias Corvinus of Hungary.

In 1397 Theodore I Palaiologos deposed the local dynast of Monemvasia, who appealed to Sultan Bayezid I and was reinstated by Turkish troops.

In 1508, the city was captured by Selim I, who was the son of the Sultan of the Ottomans at that time, Bayezid II.