Byzantium/Constantinople was conquered in 1451, but the empire continued to decline starting around the 18th or 19th centuries. It officially died in WWI. As for how long it was a major threat to Europe, the empire's prime was the 16th century, under Suleiman the Magnificent.
C) Great Britain
The Treaty of Paris of 1763 resulted in France forfeiting most of their north american land. They gave all their land to the east of the Mississippi river over to British rule within the British colonies.
Answer:
because he didn't want to be president I think
Why 1807 significant
The members of the Society for the Abolition of the Slave Trade decided to concentrate on a campaign to persuade Parliament to prohibit the trading in slaves, for tactical reasons. They felt they were more likely to succeed, than if they demanded the abolition of slavery itself throughout the empire.
Why 1833 significant
The British Parliament passes the Slavery Abolition Act 1833, ultimately giving slaves in much of the British Empire their freedom (enacted 1834).
Credicts to the owner
Ukraine (USSR)Holocaust and Nazi -Occupied Europe,1941-1955..Rwandan Genocide,Rwanda..1994..Armenian Genocide..1914..Civil Rights issues USA..1960’s..Along with the Jim Crow Laws..