There is always some distortion
Answer:
Sep 30, 2019 — The Louisiana Purchase stretched from the Mississippi River to the ... the defining themes of 19th-century American history, but it is not just the ... in the United States, the western frontier offered the possibility of independence and upward mobility for all. ... Westward Expansion and the Compromise of 1850.
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.
New York, New Jersey and Pennsylvania are states in the Highland region.
