Why did entering wwi prove devastating for czar nicholas ii?

The president has what role as the head of the armed forces 1.commander 2.general in chief 3.commander in chief 4.chief petty officer 5.joint chief

In order to get a consensus between anti-federalists and federalist to be able to forward on the constitution, james madison advocated for a bill of rights. what was the purpose of the bill of rights for citizens of the united states?

World war i brought increased immigration to the united states from which country? germany france italy mexico