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.
Answer:
B
Explanation:
HUAC acted recklessly in attempting to find communist influence in the USA
Congress felt the need for a stronger union and a government powerful enough to defeat Great Britain, so that's why they made The Articles of Confederation.
Answer:
Slaves and crops.
Explanation:
The more land they had the more crops they could grow to earn money. And the more crops they grow they needed more slaves.
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