Book excerpt: Prior to the abolition of slavery, thousands of African-descended people in the Americas lived in freedom. Their efforts to navigate daily life and negotiate the boundaries of racial difference challenged the foundations of white authority--and linked the Americas together. In Black Freedom in the Age of Slavery John Garrison Marks examines how these individuals built lives in freedom for themselves and their families in two of the Atlantic World's most important urban centers: Cartagena, along the Caribbean coast of modern-day Colombia, and Charleston, in the lowcountry of North America's Atlantic coast. Marks reveals how skills, knowledge, reputation, and personal relationships helped free people of color improve their fortunes and achieve social distinction in ways that undermined whites' claims to racial superiority. Built upon research conducted on three continents, this book takes a comparative approach to understanding the contours of black freedom in the Americas. It reveals in new detail the creative and persistent attempts of free black people to improve their lives and that of their families. It examines how various paths to freedom, responses to the Haitian Revolution, opportunities to engage in skilled labor, involvement with social institutions, and the role of the church all helped shape the lived experience of free people of color in the Atlantic World. As free people of color worked to improve their individual circumstances, staking claims to rights, privileges, and distinctions not typically afforded to those of African descent, they engaged with white elites and state authorities in ways that challenged prevailing racial attitudes. While whites across the Americas shared common doubts about the ability of African-descended people to survive in freedom or contribute meaningfully to society, free black people in Cartagena, Charleston, and beyond conducted themselves in ways that exposed cracks in the foundations of American racial hierarchies. Their actions represented early contributions to the long fight for recognition, civil rights, and racial justice that continues today.