The answer would probably be the “Freedom Riders”, who challenged segregation on public transportation throughout the South.
I'm pretty sure it was the American Revolutionary War.
Answer:
because it became less economically viable to push the borders further, and because of the Persians in the east.
Hello!
The first is known as the separation of powers (also referred to as checks and balances).
I am not entirely sure about the second, but I believe that the answer is the Senate.
I hope this helps you! Have a lovely day!