The Confederate States Congress was both the provisional and permanent legislative assembly / legislature of the Confederate States of America that existed from February 1861 to April / June 1865, during the American Civil War. Its actions were, for the most part, concerned with measures to establish a new national government for the Southern proto-state in the current Southern United States region, and to prosecute a war that had to be sustained throughout the existence of the Confederacy. At first, it met as a provisional congress both in the first capital city of Montgomery, Alabama, and the second in Richmond, Virginia. As was the case for the provisional Congress after it moved northeast to Richmond, the permanent Congress met in the existing Virginia State Capitol, a building which it also shared with the secessionist Virginia General Assembly (state legislature).