The U.S. entered WWI in 1917 and the war ended in 1918.
mr
Economic gain.
world 2 war
the sinking of a ship
German submarine warfare
The Franco-Prussian War was not directly related to the entry of the US into World War I.
mr
do you mean what caused us entry into world war one? if so then the sinking of the USS Lusitania by German u-boats was what caused American entry into the war
yes
Economic gain.
The Allies.
The Allied Forces, as the US joined their side.
the assassination of Archduke Franz Ferdinand and wife
i always know that 7 divided by 2 = 8,0000
One was the sinking of the Lusitania in 1915.
Fresh manpower was needed to break the stalemate.
Americans of direct German background.