The significant social movement that sought to end slavery in the Americas was the abolitionist movement. This movement emerged in the late 18th and 19th centuries, advocating for the emancipation of enslaved people and the end of the slave trade. Abolitionists utilized various strategies, including petitions, public speaking, and literature, to raise awareness about the moral and humanitarian issues surrounding slavery. Influential figures like Frederick Douglass and Harriet Tubman played crucial roles in emphasizing the urgency of the cause, which ultimately led to significant political changes, including the passage of the 13th Amendment in the United States.