This lecture queries the ways in which abolitionist policies around the world were implemented roughly between the mid-1820s and late 1860s, focusing on how they often supported imperialist endeavors. Expanding well-beyond the Atlantic, it hopes to reveal how transnational Abolitionism often served expansionist agendas, and acted as a back-door for new forms of labour exploitation. The lecture also compares how Abolitionism was used as a shield by politicians, officers, missionaries, and others, while engaging in questionable imperialist practices around the world.