Gregory E. O'MalleyView on AmazonGregory E. O'Malley examines a crucial, but almost universally overlooked, aspect of the African slave trade in his new book Final Passages: The Intercolonial Slave Trade of British America, 1619-1807 (University of North Carolina Press for the Omohundro Institute, 2014).  Although most work on the topic focuses on the "Middle Passage" – the shipping of enslaved Africans across the Atlantic Ocean – O'Malley chronicles the "final passages" that many captives faced from the Caribbean to ports scattered throughout the Americas.  A significant percentage of enslaved people faced these added voyages, which could often be more brutal and unhealthy than the Middle Passage.  O'Malley traces the effect of the intercolonial trade on African captives, as well its influence on the creation of an enslaved culture in the Americas.  He also examines in great detail how this intercolonial trade shaped the markets of slavery in the Western Hemisphere, which in turn dramatically affected diplomatic relations between European powers in the period.