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 President appointed a 3 member mediation panel to settle the dispute with the pilots and American Airlines
<span>They both celebrate the start of a new year. </span>
Answer:
The answer is D "Religious fundamentalism"
Explanation: