The essays presented here reflect recent widespread interest in reconsidering the political, geographical, and cultural boundaries conventionally observed by area specialists and others. They intentionally range widely through time and space, dealing with diverse issues and contexts, but each highlights the very general theme of cross-cultural interaction. Although they draw heavily on area studies, the contributors seek to put previously separate bodies of scholarship in dialogue with one another by exploring those interactions that have historically linked world regions. In doing so, they contribute to the development of transregional and global historical analysis.