Taking the theme of 'abolition' as its point of departure, this book builds on the significant growth in scholarship on unfree labour in the Atlantic and Indian Ocean worlds during the past two decades. The essays included here revisit some of the persistent problems posed by the traditional comparative literature on slavery and indentured labour and identify new and exciting areas for future research. This book is intended for a broad audience, including scholars, students as well as for a general readership who have specific interests in the history of the slave trade, slavery and imperial history. It was originally published as a special issue of the journal, .