The bombing of Pearl Harbor on December 7, 1942.
The assassination of Archduke Ferdinand was the one event that pushed Europe over the edge and brought about World War I.
Its World War 1 u idiot...
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.
The attack on Pearl harbour
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.
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.
Which event at the conclusion of World War 2 initiated the Cold War?Read more: Which_event_at_the_conclusion_of_World_War_2_initiated_the_Cold_War