The Endless Commons tells the interwoven stories of a series of revolts, attempted revolutions, and filibuster invasions that took place along the border dividing the British Empire and the United States. The line dividing the republic from the colonies was not yet a border but was in fact a borderland: a region where multiple political “edges” – British, French-Canadian, American, Irish, Anishnaabeg, Haudenosaunee, and Wabanki -- rubbed against each other causing a decade of social strife but also of cross-cultural ferment. Borderland residents, drawing on the lived legacy of the British Colonial “Civil War” – the American Revolution and the War of 1812 – justified these rebellions by articulating an evolving set of justifications grounded in notions of the commons transplanted from Europe into the fertile soil of North America. Sparking to life along the live-wire of economy and culture stretching from the mouth of the St. Lawrence River to the Great Lakes these uprisings “taught” the state of New York, the U.S. federal government, and the British Empire what motivated settlers to take and transform land into territory and real estate. While these states crushed the borderland revolts they also adapted their legal structures to accommodate the culture of the commons articulated by settlers. At the same time I show how Seneca Clan Mothers led a coalition of diasporic Haudenosaunee to establish a new polity, the Seneca Nation of Indians that protected their Indigenous commons for future generations. By tracing how these various groups articulated and fought for their conceptions of the commons I show how Indigenous and non-Indigenous borderlanders made their contribution to the broader global “Age of Revolution.”