I am a historian of modern Germany and modern East Africa, with particular focus on colonial geographies and the intersection of ideas about race and space in German East Africa. My research explores the history of geography as a repertoire of power and domination in 19th-century European imperialism as an intellectual and administrative project. I explore the importance of colonial geographies to see the ways in which Germans developed new ideas about race and space at the end of the 19th century and turned those ideas into administrative practice. German and local geographies of East Africa reveal the ways in which Germans and local populations, both in the colony and the metropole, imagined their place in the world and the relationship between people and the spaces they occupy. By tracing changes in how people imagined such relationships, I argue, we can better understand the ways in which Europeans and Africans more developed new conceptions of themselves and their relationships with their environments through the colonial encounter.