The attack on Pearl Harbor was an event Americans were not prepared for. The attack led to positive but also negative changes in America. It all started when America needed to put a stop to giving oil to Japan. But even before that Japan relied on different countries to get their resources from since they are an island nation that hardly had any natural resources. Which is why they needed international trade in order for their economy to keep on running. Except they ran into a crisis and the leaders at that time decided that they would invade different countries so that they could get more resources. America didn’t want to go into another war so they didn’t really pay attention until Japan attacked the American USS PA gunboat because they were attacking China. Americans decided to take action and impose economic sanctions on Japan's military. Then Japan joined Germany and Italy because of how they thought about nationalism. Franklin D. Roosevelt announced that they will have a trade embargo on oil and Japan's military relied on it a lot. Such as they supply 90% of oil to Japan but now this will cause economic and military problems which means that they will not be able to expand their land. Then later Japan planned to attack the United States Pacific fleet in order for them to get revenge for what they did to them. The attack on Pearl Harbor is the most significant event in American History in the years from 1865 to 2000 because it will lead to WWII, the end of isolation.
On December 7, 1941, Japan attacked America's U.S. naval base also known as Pearl Harbor. The attack was crucial and it led to many things being destroyed and many people died. The plan the Japanese thought of is that if they destroy America's Pacific fleet then they would not be able to attack them back. The battleship was attacked badly such as the USS Arizona being bombed and it sank and the USS Oklahoma flip over because there wasn’t enough strength to keep it in balance. The following day President Roosevelt asked Congress for there to be a war against Japan. War was the only thing that was certain because of the difference each side had. Japan, Germany, and Italy all agree and also proclaim that there is to be a war against America. America was one of the countries that helped stop Germany from taking control of all of Europe.
Isolation ended due to the attack on Pearl Harbor. Before the attack, Americans were separated between isolationism and interventionism. Roosevelt realized that Germany would be a potential threat because they were starting to take control of Europe. When Americans found out about what happened in Pearl Harbor they decided to end isolationism. For example, They notice that they shouldn’t stay still but have to take action because they are going to go to war. Later on, America forgot about isolationism because it had to associate itself with worldwide conflicts.