What event brought the United States into ww1?

Answer 1

There was no single event that drew the US into World War I in 1917. The sinking of the Lusitania in 1915 along with continued submarine warfare against American commerce made the US entry into the war almost inevitable.

Answer 2

Germany's policy of unrestricted U-Boat activity.

Answer 3

i was told it was because the English were losing, and so the Americans came in to help us out.

other people say it was because everyone else was doing it

Answer 4

That would be World War 1.

Answer 5

The sinking of the Lusitania.