events
The Treaty of Constantinople establishes the Septinsular Republic, the first autonomous Greek state since the Fall of the Byzantine Empire. (Under the Old Style calendar then still in use in the Ottoman Empire, the treaty was signed on 21 March.)
Related Wikipedia articles
Treaty of Constantinople (1800)
Russian and Ottoman agreement creating the Septinsular Republic
The Treaty of Constantinople of 2 April [O.S. 21 March] 1800 was concluded between the Ottoman Empire and the Russian Empire, and heralded the creation of the Septinsular Republic, the first autonomous Greek state since the fall of the Byzantine Empire in 1453.Source: Wikipedia (CC BY-SA)
Septinsular Republic
Ottoman and Russian protectorate in the southwest Balkans from 1800-07
The Septinsular Republic, also known as the Republic of the Seven United Islands, was an oligarchic republic that existed from 1800 to 1807 under nominal Russian and Ottoman sovereignty in the Ionian Islands.Source: Wikipedia (CC BY-SA)
Fall of Constantinople
1453 Ottoman capture of the Byzantine capital
The Fall of Constantinople, also known as the Conquest of Constantinople, was the capture of the capital of the Byzantine Empire by the Ottoman Empire. The city was captured on 29 May 1453 as part of the culmination of a 55-day siege which had begun on 6 April.Source: Wikipedia (CC BY-SA)
Old Style and New Style dates
Changes in calendar conventions
Old Style (O.S.) and New Style (N.S.) indicate dating systems before and after a calendar change, respectively. Usually, they refer to the change from the Julian calendar to the Gregorian calendar as enacted in various European countries between 1582 and 1923.Source: Wikipedia (CC BY-SA)
April 6
Day of the year
April 6 is the 96th day of the year in the Gregorian calendar; 269 days remain until the end of the year.Source: Wikipedia (CC BY-SA)