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:
The Ordinance of 1785 provided for the scientific surveying of the territory's lands and for a systematic subdivision of them. Land was to be subdivided according to a rectangular grid system. The basic unit of land grant was the township, which was a square area measuring six miles on each side.
Explanation:
In 1907, Britain, France and Russia formed a military alliance for WWI, known as the Triple Entente.
Answer:
the Holocaust
Explanation:
the holocaust was worst not only because this event had more human deaths, but because it also led to a war.
