I believe its abolishing slavery!
The Nazis and the Soviets had agreed to not engage in fighting because Hitler was focusing on the West, and Russia did not want to get involved. Hitler broke this pact, however, by launching an unprovoked and unexpected attack on Russia through the code name Operation Barbarossa.
The United States claimed the Lusitania carried an innocent cargo, and therefore the torpedoing was a monstrous German atrocity. Actually, the Lusitania was heavily armed: it carried 1,248 cases of 3 inch shells, 4,927 boxes of cartridges (1,000 rounds in each box), and 2,000 more cases of small arms ammunition. The British and American governments lied about the cargo.
Answer:
Americans made them move toward california. They started to kill buffulo.
Explanation:
They wanted to present them as if they were gods. This was quite common in history and is a reason for example why pharaohs got pyramids built in their honor. The giant heads depicted their leaders as gods or someone who is in general larger than life itself. It was a sign of respect and others who would visit would also see this and know who they are dealing with. Such heads can still be found and examined which is important when trying to understand their ancient culture.