Explain how the issue of slavery and the abolitionism movement helped to start the American Civil War. Support your answer using information from the passage.

The abolitionist movement was an organized effort to end the practice of slavery in the United States. The first leaders of the campaign, which took place from about 1830 to 1870, mimicked some of the same tactics British abolitionists had used to end slavery in Great Britain in the 1830s. Though it started as a movement with religious underpinnings, abolitionism became a controversial political issue that divided much of the country. Supporters and critics often engaged in heated debates and violent — even deadly — confrontations. The divisiveness and animosity fueled by the movement, along with other factors, led to the Civil War and ultimately the end of slavery in America.

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