The american civil war, otherwise known as the war between the states, lasted for four (4) years. It began in 1861 and ended in 1865. This war was between the U.S and the 11 southern states that separated from america and formed the Confederate States of America. This essay will discuss the four main reasons believed to be the causes of the American Civil War. Those causes are, slavery in America in 1619, John Brown’s raid on Harper Ferry on October 16th, 1859, The Westward Expansion of 1803 and The attack on Fort Sumter on April 12th, 1861. Given the proper resources provided to us through modern day technology, these are the four reasons believed to have played a vital role in the start of the american civil war.One of the main causes believed to begin the american civil war is slavery. Slavery in America was first introduced by a the Dutch who had captured Africans and brought them to America. When the Dutch did this they planted the seeds of slavery in America. Little did they know that this was going to turn into a nightmare that ends up dividing the nation. Some 6 to 7 million slaves were estimated to of be brought to the “New World” during the 18th century. Slavery became a big problem later on in america when people realized how bad slavery was through the book Uncle Tom’s cabin and through other media sources. As a result of this there was an outbreak in rebellions and antislavery movements which caused an uprise between the north and south about if slavery should be kept or not which eventually led to the American civil war beginning. Uncle Tom’s Cabin is an anti slavery novel written by a woman named Harriet Beecher Stowe. This novel was published in 1852. The book takes place in the mid 19th century on a plantation in Kentucky owned by the Shelby family. This book became the most discusses fiction book in the United States. Uncle tom’s cabin contributed greatly to the start of the american civil war because the book told people what the political speeches, tracts and newspaper at that time could not.