Why did the US Finally become persuaded to enter WWI?
The U.S. finally entered WWI because of the Sinking of the Lusitania and the Zimmermann telegram. The Zimmermann telegram told Mexico to bomb the United States. Then the Germans kept bombing ships, even after they were told not to. When the Germans Sunk the Lusitania ship The U.S. was upset because many American citizens were on that ship and it sunk and practically killed all of them.