Why did the united states enter the war ww1
1 sentence

un-restricted war fare in the water because the Germans were sinking passenger ships such as the Lusitania

It is called ULAZY.

Uristricted submarine warfare

Lusitania sunk and killed American passengers.

Angry Americans

Zimmerman telegram was a secret message trying to get Mexico involved and to get attack the U.S.

Yelled I declare War.

where is the subject? hahahaha

it is based on the same philosophy as health insurance