The Arizona-Mexico border is a line of separation and a place of coming together. This paradox shapes the borderland region and its people in fascinating and important ways. In this talk, Dr. Warren offers a historical and geographical overview of the formation of the Arizona- Mexico border and its evolution since the 1800s. The program discusses historical and contemporary efforts to demarcate the boundary through bi-national surveys, the construction of fences and walls, and policing. Warren will also offer a…