The Medford Public Library is co-sponsoring the online program “The Indigenous Old World — An Exploration of Pre-Colombian North America.” Explore the worlds of the Indigenous peoples of North America before European colonization. North America was a place filled with cities, towns, and villages. Across the continent, Indigenous peoples produced architecture and monumental construction. The ancient and medieval communities of North America were fed by agriculture. Moreover, Indigenous Americans actively managed their environment and participated in long-distance exchange networks. The program will be led by Christoph Strobel, department chair and professor of history at the University of Massachusetts Lowell. He is the author of “War and Colonization in the Early American Northeast”; “Native Americans of New England”; and “The Global Atlantic: 1400 to 1900.” Register through the library’s online calendar for the Zoom link.