In The Threshold of Manifest Destiny, Laurel Clark Shire illuminates the vital role women played in national expansion and shows how gender ideology was a key mechanism in U.S. settler colonialism.

Among the many contentious frontier zones in nineteenth-century North America, Florida was an early and important borderland where the United States worked out how it would colonize new territories. From 1821, when it acquired Florida from Spain, through the Second Seminole War, and into the 1850s, the federal government relied on women's physical labor to create homes, farms,...