Events relating to oman
Osman inherits the leadership of the tribal group later known by a version of his name, as the Ottoman Turks
Moscow acquires new prestige when the metropolitan (or patriarch) of the Russian Orthodox church moves his residence from Vladimir
Charles IV, king of Bohemia, German king and Holy Roman emperor, makes Prague a glittering centre of learning and architecture
Gallipoli is taken by the Ottoman Turks, giving them their first foothold in Europe
Charles IV establishes a permanent group of seven electors - four hereditary German rulers and the archbishops of Mainz, Cologne and Trier
Jogaila, baptized a Roman Catholic before marrying Jadwiga, brings Lithuania into the Christian fold - the last part of Europe to be converted
Victory at Kosovo gives the Ottoman Turks control over Serbia, which becomes a vassal state
The Ottoman sultan Bayazid I brings the Slav kingdom of Bulgaria under his control
The Ottoman sultan Bayazid is defeated and captured near Ankara by Timur, who keeps the sultan in captivity until his death the following year
Filippo Brunelleschi begins studying the ruins of classical Rome, with a view to rediscovering classical architecture
The Byzantine emperor John Palaeologus and the Patriarch of Constantinope, Joasaph, arrive in Ferrara to attend a council of the Roman Catholic church
The office of Holy Roman emperor becomes a hereditary title within the Habsburg dynasty
Florence acquires first-hand experience of Greek culture when Greek Orthodox priests join in a debate on theology, in particular the question of Filioque
The Seventeenth Ecumenical Council moves from Ferrara, because of the danger of plague, and sets up in Florence
Skanderbeg, Albania's national hero, begins his long campaign of successes against the Turks
Christian boys, trained as slaves in the personal service of the Turkish sultan, acquire considerable power as the elite corps of janissaries

Paolo Uccello is interested in the laws of perspective, in works such as The Battle of San Romano
The Turks terrify Constantinople by lobbing vast stones at the city from a 19-ton bombard of cast iron
Constantinople falls to a 21-year-old Muslim conqueror, Mehmed II, bringing the Ottoman Turks their capital city
The Christian emperor Constantine XI dies in the fighting in Constantinople, as the Greek Byzantine empire yields to that of the Ottoman Turks
The Turks complete the occupation of Greece, which remains within the Ottoman empire until the nineteenth century
Mehmed II, conqueror of Constantinople, begins to build Topkapi Sarayi as his palace
Mehmed II and the Ottoman Turks conquer Bosnia, where a large number of noble families convert to Islam
Skanderbeg dies and Albania becomes fully absorbed into the Ottoman empire
With Constantinople in Turkish hands, Moscow begins to see itself as the centre of Orthodox Christianity - or the third Rome