The movement that aimed to end the transatlantic slave trade in the 19th century is commonly referred to as the abolitionist movement. Spanning various countries, this movement consisted of individuals and groups advocating for the end of slavery and the slave trade. Key figures included William Wilberforce in Britain and Frederick Douglass in the United States. The movement gained momentum throughout the 1800s, leading to significant legislative changes, including the British Slavery Abolition Act of 1833 and the U.S. Emancipation Proclamation.