Cormack demonstrates that geography was part of the Arts curriculum between 1580 and 1620, read at university by a broad range of soon-to-be political, economic, and religious leaders. By teaching these young Englishmen to view their country in a global context, and to see England playing a major role on that stage, geography supplied a set of shared assumptions about the feasibility and desirability of an English empire. Thus, the study of geography helped create an ideology of empire that made possible the actual forays of the next century.

Geography emerges in Cormack's account as the fruitful ground between college and court, in whose well-prepared soil the seeds of English imperialism took root. "Charting an Empire" will interest historians of science, geography, cartography, education, and empire.