The Dawes Act was introduced by Congressman Henry Dawes of Massachusetts. The idea behind that law was that Indian tribes would be broken up and those who chose to leave their tribes would be granted United States citizenship.
Hope I helped I didn't plagiarism or copy any thing word for word i typed it out
It lead to that because the U.S. chose to be imperialistic and take over smaller regions with people who didn't have a chance like Hawaii's Quenn Liliuokalani.
Lol. it seems... you already have the answer "A"
Answer:
The Pearl Harbor Bombings
Explanation:
The Japanese air force bombed the naval base at Pearl Harbor on December 7th, 1941. This brought the United States of America into World War 2, which eventually led to the nuking of Hiroshima and Nagasaki.