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| 1354 | Birth |  |
| Birth of Bayezid I the Thunderbolt |
| 1389 | Arrest |  |
| 27th June Kossovo Arrests the Serbian leader Lazar at the battle of Kossovo & has him executed |
| 1389 | Assassination |  |
| Succeeds as Sultan of the Turkish Empire, following the assassination of Murad I |
| 1389 | Battle of Kossovo |  |
| 27th June Kossovo After the assassination of his father, Murad I, has all the Serb prisoners executed |
| 27th June Kossovo Inflicts a crushing defeat on the Serbian army after the assassination of Murad I |
| 1389 | Capture of Bulgaria |  |
| Captures Bulgaria |
| 1389 | Massacre Serbs |  |
| 27th June Kossovo After the assassination of his father, Murad I, has all the Serb prisoners executed |
| 1389 | Succession |  |
| Succeeds as Sultan of the Turkish Empire, following the assassination of Murad I |
| 1389 | Treaty of Peace |  |
| Bayezid I concludes a peace treaty with the Serbia leader Bulcovic after Kosovo |
| 1390 | Rule of Wallachia |  |
| Wallachia Wallachia becomes a vassal state to Turkey |
| 1391 | Siege of Constantinople |  |
| Constantinople 1st Turkish siege of Constantinople |
| 1393 | Capture of Bulgaria |  |
| Subdues Bulgaria |
| 1393 | Rule of Bulgaria |  |
| Subdues Bulgaria |
| 1396 | Battle of Nicopolis |  |
| Nicopolis Defeats a Hungarian-French Crusader force of 10,000 who fail to take Constantinople |
| Nicopolis Defeats the Chris tian allies led by Sigismund |
| 1397 | Invasion of Greece |  |
| Turkish invasion of Greece |
| 1398 | Siege of Constantinople |  |
| Constantinople The Byzantines pay a large tribute to Bayezid break the siege |
| 1399 | Siege of Constantinople |  |
| Constantinople Successfully completes the siege of Constantinople |
| 1402 | Abdication |  |
| Bayezid I the Thunderbolt is deposed |
| 1402 | Arrest |  |
| Ankara Tamberlaine routes Bayezid at Ankara & takes him into captivity |
| 1402 | Battle of Ankara |  |
| Ankara Bayezid attempts to defend some emirs who had revolted against Timur |
| Ankara Byzantium regains Salonica & Wallachia, Serbia & Bosnia recover their independence |
| Ankara Tamberlaine routes Bayezid at Ankara & takes him into captivity |
| Ankara The commander of Ankara refuses to surrender to Timur, Bayezid goes to it's defence |
| 1402 | Capital |  |
| Adrianople The capital of the Ottoman Empire is moved to Adrianople, a shift towards Europe |
| 1402 | Independence |  |
| Bosnia Bosnia regains its independence after the battle of Ankara |
| Serbia Serbia regains its independence after the battle of Ankara |
| 1402 | Rule of Salonica |  |
| Salonica Byzantium regains Salonica after the battle of Ankara |
| 1402 | Rule of Wallachia |  |
| Wallachia Byzantium regains Wallachia after the battle of Ankara |
| 1403 | Death |  |
| Death of Bayezid I the Thunderbolt |