Answer:
go into ur room lock the door and study
avoid using the phone
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.
The correct answer is true
At the time of founding for the 13 colonies, slavery was legal in every one of them.
Yes, lack of foreign conflict for close to 100 years until world war 1 which is a sign of its success.
