And !
which answer best explains the contributions of african-americans during the revolutionary war?

african-americans only fought for the british side during the revolutionary war. the british promised the slaves their freedom at the end of the war.
african-americans fought for both the british and american sides during the revolutionary war. both sides offered them freedom or money for fighting.
african-americans started the war fighting for the british, but switched to support the american troops after being promised money and their freedom.
african-americans only fought for the american side during the revolutionary war. the americans promised the slaves their freedom at the end of the war.