Answer:
Cause they big bois...Lol No Empires grow for different reasons. The Persian Empire of the Achaemenids was built largely through military conquest. The Maurya Empire in India used a combination of political sabotage, religious conversion, and military conquest to expand its rule. Empires expand their territories by different ways. The most obvious one is with war, where the stronger one usually wins. But there are also other ways. Earlier when empires were ruled by kings and their heirs after them
Explanation:
i read books, I ask google, I did research
First off, the Allies warned Japan TWICE about the bombings. Also the use of the two atomic bombs finally forced japan to surrender bringing an end to the war and brutal Japanese colonialism era in Korea, parts of China, Philippines, Indonesia and many more. (Japan committed many war crimes in these countries).
During the 19th century, America had a strong reluctance to become involved in other countries alliances and affairs. Isolationists in America argued that the US had a different philosophy than European countries and the US should defend freedom and democracy by not being involved in such things.
During the Spanish-American War, the US remained isolated and the country fought the war without alliances and without fighting in Europe. But the mindset started to change since the motto of freedom and democracy was substituted by the US bringing an empire in the Caribbean and in the Pacific - the US had influence in the Phillippines, Puerto Rico and Guam -.
President Roosevelt had the big stick policy, he believed that the US should export its values and become a global power. At the same time, he defended that the US should avoid conflicts. President Roosevelt ended the isolationism in the US and started the modern American philosophy of acting aggressively in foreign affairs even without the support of the Congress.