The bombing of Pearl Harbor on December 7, 1942.
Its World War 1 u idiot...
The assassination of Archduke Ferdinand was the one event that pushed Europe over the edge and brought about World War I.
because world war 1
The attack on Pearl Harbour, by the Japanese, directly brought the USA into the second World War. America declared war on Japan, and then Germany declared war on the USA, some days later.
One big event that happened in America during World War 1 was that the economy started to improve. Industry also picked up during this time.
German U-boats sunk the the Ship the Lusitania. It was carrying American civilians. America was close to joining the war, this just pushed America into it faster and on the side of England.
The attack on Pearl harbour
Serbia
which event sparked world war 1?
German U Boats were sinking the U.S's ships, they got tired of it and eventually declared war, there was no Pearl Harbor.
The Russians pushed from the East. The Allies pushed from the North and South.
The attack on Pearl Harbor caused America to join World War II which is when they began to research and develop the bomb.