What was the us involved in prior to entering ww1? in 1916?

The resumption of unrestricted submarine warfare by the Germans was a calculated gamble to choke off supplies to the Allies before the might of the U.S. could be brought to bear in Europe; but it enraged the Americans. ... On April 6, 1917, the U.S. Congress declared war on Germany.

during the 1920s the goal of the united states was not letting business collide or go down or even compete this was due to wwl