As it gained momentum, the abolitionist movement caused increasing friction between states in the North and the slave-owning South. Critics of abolition argued that it contradicted the U.S. Constitution, which left the option of slavery up to individual states
Answer: British Anti-slavery. In the space of just 46 years, the British government outlawed the slave trade that Britain had created and went on to abolish the practice of slavery throughout the colonies. John Oldfield shows how this national campaign became one of the most successful reform movements of the 19th century.