On December 7, 1941, the Japanese launched a surprise attack<span> on the U.S. naval base at </span>Pearl Harbor<span>. ... The day </span>after the attack<span>, President Franklin D. Roosevelt addressed a joint session of the 77th United States Congress. Roosevelt called December 7 "a date which will live in infamy".
Theres a video about this on YouTube and I'll give you a link to another way.....</span>https://www.google.com/search?q=What+were+two+immediate+effected+after+the+attack+of+Pearl+Harbor&oq... Hope this helps :)
One major cause of the Pearl Harbor attacks were the unanimous American opinion to join the war, where before that point America didn't want to have anything to do with the war.
Another effect of the Pearl Harbor attacks was a trading embargo America placed on Japan, hurting their economy.
