What was the main reason the Union blockaded the port of Savannah during the Civil War? %C2%A0(1 point) Responses To prevent needed supplies from entering the Confederacy To prevent needed supplies from entering the Confederacy To lessen the freight load of the southern railroads%C2%A0 To lessen the freight load of the southern railroads%C2%A0 To force the Confederacy to move its capital city To force the Confederacy to move its capital city To force the Confederacy to only trade with Britain