Without more details it's difficult to be certain, but you may be thinking of the ABCD (American/British/Chinese/Dutch) line in 1940. The named countries (and others, but those specifically listed probably had the most impact) embargoed iron ore, steel, and oil sales to Japan in an effort to discourage Japanese militarism.
Sigh.......Because they were fighting them and it's the way to keep every advantage to yourself and not hand it or do business with it for your enemy.
Oil
Americans have changed Japan by not giving japan the proper exports during World War II.
Porn Mags
Japan's World War II was during 1912 - 1945.
yes
Hideki Tojo was the leader of japan in world war 2.
Germany and Japan were allies during World War 2. They were not at war with each other.
World War 2
During WW2 in Hiroshima and Nagasaki, Japan.
Japan
Hideki Tojo was the dictator of Japan during WWII.
Everything. The US did not ship anything to Japan during the war, we were enemies!
World War II began in the 1930, officially. A man name Adolf Hitler was invading the countries around Germany during that time. Japan began invading an area called Indochina. President Roosevelt was not happy about this and stopped all the exports going to Japan. On December 6, 1941 Japan bombed a place in Hawaii called Pearl Harbor to get revenge on stopping the exports. Naturally, we became enraged and began to help the invasion on Europe and we declared war on Japan.