PLEASE HELP ME I REALLY NEED THESE ANSWERED how did the Battle of Antietam impact the civil war?
how did the Battle of Gettysburg impact the civil war?
how did the Siege of Vicksburg impact the civil war?
how did the Battle of Chickamauga impact the civil war?

Two of these describe "federalism." (choose two answers) select one or more: a. the national government absolutely controls all state governments. b. power is shared by the national and state governments. c. state governments exercise absolute power over the national government. d. it is a compromise meant to eliminate the disadvantages of a "unitary" and a "confederate" system.