John Marshall's landmark 1823 decision in Johnson v. M'Intosh gave the European sovereigns who "e;discovered"e; North America rights to the land, converting Native Americans in one stroke into mere tenants. In 1991, while investigating the historical origins of this highly controversial decision, Lindsay Robertson made a startling find in the basement of a Pennsylvania furniture-maker--the complete corporate records of the Illinois and Wabash Land Companies, the plaintiffs in the case. Drawing on these records, Conquest by Law provides, for the first time, a complete and troubling account of collusion, detailing how a spurious claim gave rise to a doctrine--intended to be of limited application--which led to the massive displacement of Native Americans and the creation of a law that governs indigenous people to this day.