Formed in 1833, the American Anti-Slavery Society became the largest and most influential abolitionist organization in the United States. Before the organization’s inception, organized antislavery activism was heavily intertwined with organizations that believed free blacks should be removed from the United States. The American Anti-Slavery Society created a network of newspaper “agents” and lecturers to spread their message that slavery was contrary to the Christian religion and that blacks were equal to whites. These efforts were hugely successful, spurring over 1,000 anti-slavery societies throughout the North. Disagreements within the organization led to a split in 1840.