Matching Pairs What were causes of the Civil War?Online version Relate the causes with their corresponding explanation to understand the birth of the Civil War. by Norma García 1 Rights in the States 2 The Underground Railway 3 Abolitionist Movement 4 Slavery 5 Abraham Lincoln 6 The Dred Scott Decision 7 Uncle Tom's Cabin Even when slavery was forbidden by the federal government some States refused, there was a struggle over political power. Some abolitionists actively helped runaway slaves to escape through this path. By the early 1830s, ideas became more strident. People were following a higher law not the Constitution. Freedom, not being a fugitive was the aim. Opponent of the expansion of slavery but said he would not interfere with it where it existed until he became president and slavery was banned. Some 4 million Africans and their descendants were slave laborers in the South mainly in plantations. A slave looking for citizenship legally in the Supreme Court whose request was denied since no person with African blood could become a U.S. citizen. A book published in 1852, became a best seller representing the evils of slavery.