Whether we begin with Columbus, Jamestown, or the Aztec Empire, we usually see U.S. and Mexican history as distinct national stories. As a result, we often overlook multiple worlds that cross national borders. This conference seeks to give new voice to these forgotten histories by making the U.S.-Mexico borderlands central to the American past. Showcasing the work of a new generation of young scholars, the conference offers a transnational vision of a neglected era. Papers focus on the formative years of modern borderlands history, from 1821, when U.S.-Mexican frontier relations began, to the mid-twentieth century, when economic development and state-formation gave the borderlands their current legal, political, and social shape. Conference speakers: