Historian Linklater relates how the borders and boundaries that formed states and a nation inspired the sense of identity that has ever since been central to the American experiment. Linklater opens with America's greatest surveyor, Andrew Ellicott, measuring the contentious boundary between Pennsylvania and Virginia in the summer of 1784; and he ends standing at the yellow line dividing the United States and Mexico at Tijuana. In between, he chronicles the evolving shape of the nation, physically and psychologically. As Americans pushed westward in the course of the nineteenth century, the borders and boundaries established by surveyors like Ellicott created property, uniting people in a desire for the government and laws that would protect it. Challenging Frederick Jackson Turner's famed frontier thesis, Linklater argues that we are defined not by open spaces but by boundaries.--From publisher description.