The answer is “Immigrants we’re confronted with cultural shock”.
The attack in Pearl Harbor is the reason why United States enter to war. A day after the attack, President Roosevelt made a speech to the United States addressing what will the U.S. respond after this attack. The speech started mentioning the peace agreement that was being negotiated by Japan and the United States of America and then, the attacks that Japan made in December 7. In the first part of the speech, Roosevelt was trying to deliver shame, shame on a country who was negotiating peace and without notices, canceled any further negotiation and attack. This was consider a stab in the back against the U.S., who were in a state of peace, pure victims to an attack like Pearl Habor was. At the end of the speech, anger and a sense of justice was comming from Roosevelts mouth, he wanted to let America know, that this act was not going to be ignored. The United States was going to enter to war, not just to defend themselves from attacks like Pearl Harbor. They were going to enter to war and make sure attacks likes this one will never happend again. The United States is a country that not only Japan, but anybody should mess with.
Answer: making manifest destiny an official federal policy
