Making America tells the story of the peopling of the New World, of how land came to define the settling and identity of America, and of how the guests’ ancestors were part of this history. We discover descriptions of Meryl Streep’s eighth great-grandfather who fought in Metacom’s War; records of a land dispute in Spain that pushed Eva Longoria’s ancestors to leave for the New World; a treaty that Louise Erdrich’s Native American ancestor was forced to sign; and Yo-Yo Ma’s family genealogy in China, which gives insights into his identity he has longed for his whole life.

• Henry Louis Gates, Jr.