Causes & Effects of Japan in World War II

By: Parker Goertzen

A North American B-25 makes a bomb run on a Japanese destroyer escort off Formos
Hirohito, the Emperor of Japan during WWII
Japan's Flag during World War II


- All industrialized nations need resources to keep them going strong; Japan had no coal, iron ore, coke, bitumen, oil, or other necessary resources to maintain their industrialization.

- Japan had to expand, but claimed they were hemmed in from the Northern Pacific by the western powers.

- Japan invaded China in 1939 while the United States remained neutral.

- Both Japan and Germany, thought the United States would never get involved in a war, and that the U.S. was a second rate power.

- Japan gambled and performed a pre-emptive strike against the United States at Pearl Harbor on December 7th, 1941.

- Japan hoped to wipe out America's sea power in the Northern Pacific with this one crippling blow.

- On December 12th, 1941 Adolf Hitler declared war on the United States. Both countries underestimated the United States.

Japanese Soldiers during World War II
Japanese Empire Propaganda
Japanese Empire Propaganda

Some Important Events are Listed Below...

March 25, 1933 - Japan withdrew from the League of Nations.

December 7, 1941 - Japanese launched a surprise attack on U.S. fleet at Pearl Harbor. The very next day the United States declared War against Japan.

Soon after, Japan invaded Bermuda, then took Wake Island, Hong Kong, and New Guinea. In the next three and a half years, many small and large battles were fought.

August 6 1945 - an atomic bomb was dropped on Hiroshima, Japan and then on the 9th of August another atomic bomb was dropped on Nagasaki, Japan.

Soon after, on August 14, 1945, the Japanese surrenders and World War II ends!

A map of what the Japanese Empire claimed in 1942. (Shown in Red)
Japanese Planes during World War II
Japanese Soldiers


- Japan’s recovery was resulted from United States' assistance.

- The U.S'. assistance consisted of persuading its western allies to drop their demand on Japanese reparations and providing modern technology, opening U.S. markets with Japanese goods, and persuading other countries to resume trade with Japan.

- Help coming from a once enemy, but now an ally, Japan pursued to fully take advantage of their position.

- Japan's Systems and Businesses

Japan in World War II - Video (Below)

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