What Was the US Involvement in WW1? ... The reason for America to become involved in WW1 was Germany's unrestricted submarine warfare, which had already sunk several American merchant ships. The U.S. was initially contributed to the war by supplying raw material, supplies and money.
Answer:Cause of World War 1
The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.
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