Because they were driven away from their homelands by force
Answer:
Romans preferred a much more regular, rational layout and plan. They inherited the Greek tradition of city planning on rectangular grids but they refined it to include more open space and central public focus: the forum, a kind of city center where the most important civic buildings, temples and monuments would be located.
Answer:
I think the Louisiana Purchase
hope this helped
Henry Clay, William H. Crawford, John Quincy Adams, and Andrew Jackson