The American Civil War was a civil war in the United States from 1861 to 1865, fought between northern states loyal to the Union and southern states that had seceded to form the Confederate States of America. The Civil War started because of uncompromising differences between the free and slave states over the power of the national government to prohibit slavery in the territories that had not yet become states. ... The event that triggered war came at Fort Sumter in Charleston Bay on April 12, 1861. A civil war, also known as an intrastate war in polemology, is a war between organized groups within the same state or country. The aim of one side may be to take control of the country or a region, to achieve independence for a region or to change government policies. The American Civil War was a civil war in the United States from 1861 to 1865, fought between northern states loyal to the Union and southern states that had seceded to form the Confederate States of America. The civil war began as a result of the unresolved controversy of the enslavement of black people and its disputed continuance. War broke out in April 1861 when secessionist forces attacked Fort Sumter in South Carolina, just over a month after Abraham Lincoln had been inaugurated as the president of the United States. The loyalists of the Union in the North, which also included some geographically western and southern states, proclaimed support for the Constitution.
