President woodrow wilson was re-elected in 1916 with the of the slogan “he kept us out of war.” the next year, however, he led the united states into the war on the side of the allies. which of the following contributed to american involvement in the war?

1. the sinking in 1915 of the british liner lusitania

2. germany stopped submarine warfare in 1917

3. a german attempt to turn canada against the united states

4. russia entering the war in 1917

1. The sinking in 1915 of the British liner Lusitania

Explanation:

German submarines sunk the Lusitania. This led to the deaths of 128 Americans. The sinking led to more tensions between Germany and the United States.

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.