Historians of empire and colonialism consider how power operates across space. We treat empires as political, cultural, social, and economic institutions that shape human agency and identity. At the University of Virginia, we work across different time periods and geographic areas – from the Greek and Roman empires of the ancient world to the imperial formations of the Cold War. In our teaching and research, we examine how such empires acquire, exercise, and justify authority. We ask how they administer diverse populations, and what role these populations play in imperial rule. We study the many forms of colonial domination and resistance – but also hybridization, collaboration, and mutual influence. We track the circulation of goods, people, ideas, and practices, both within empires and across them. And, we consider the varied legacies of empire, such as the racial, social, and religious categories they produce. The study of empire and colonialism helps to locate the local in the global, and vice versa. It highlights both the networks and the hierarchies that structure our world.