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.
Farmers is the answer you are looking for!
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xo ♥ -Cote
True, if this is about WW1 the germans rapidly moved through Belgium ignoring thier neutrality in the conflict.
Winston Churchill
<span> He was the prime minister of England. England was one of the United States' closest allies throughout the 20th century, and Churchill was a highly respected, successful leader, so Americans trusted his opinion of the Soviet Union when he spoke of the Iron Curtain in the 1940s. </span>
