User blog comment:Frymon/Ideas for my Timeline needed/@comment-1483327-20100818031306

The United States didn't enter WWI OTL because of the Lusitania sinking. That ticked them off, but didn't cause them to declare war. The real entry of the US into the war was when the Americans intercepted the Zimmerman Telegraph, which was basically an invitation (to be given to the Mexican leader) to join the war on the side of the Germans. The Confederates could be giving material support to one side, and a nation on the other side sends a similar telegraph. This would then spark the Confederate entry into the way in the same way as the American.