why did the u.s. become invoved in world war 11?

Most of us believed that the U.S. became involved in WW II to protect ourselves and our allies from the ruthless tyrannical ambitions of the German and Japanese Empires. Germany was rapidly conquering Europe while Japan was expanding in the Pacific. The Japanese attack on Pearl Harbor in Hawaii, then a U.S. territory, sparked our declaration of war against the Axis powers.

More cynical and pragmatic historians view our entry into the war as an economic move to protect our trade with western Europe and the far eastern Pacific islands.

what were the american strategy in world warII and how was it implemented by the armed forces?

The United States became involved in World War II primarily because of the attack on Pearl Harbor by the Empire of Japan on December 7, 1941. However, there were also other factors that influenced the US decision to enter the war:

1. Pearl Harbor Attack: The surprise attack on the US naval base at Pearl Harbor, Hawaii, was a turning point. It resulted in the death of more than 2,400 Americans and the destruction of a significant part of the American Pacific fleet. This attack led the US to declare war on Japan the next day.

2. Axis Powers' Expansion: The aggression of the Axis Powers, including Germany, Italy, and Japan, threatened the stability of Europe, Asia, and the Pacific. The US saw this expansion as a direct threat to its own security and the principles of democracy and freedom.

3. Ideological Differences: The US opposed totalitarian regimes and sought to promote democracy worldwide. Nazi Germany and Imperial Japan were aggressive, expansionist powers led by dictators. The US felt compelled to take a stand against these ideologies.

4. Prior Aid and Support: Before officially joining the war, the US had been providing significant aid and support to Britain and the Soviet Union through programs like Lend-Lease. This assistance demonstrated a growing connection and commitment to the Allied cause.

While the attack on Pearl Harbor was the immediate trigger for the US to enter the war, it was the combination of these factors, including threats to US security, ideological concerns, and existing alliances, that compelled the United States to become involved in World War II.

To find more information about this topic, you can refer to historical books, articles, documentaries, or trustworthy online sources.