The “mound builders” who lived east of the mississippi river were the and the a. adena & hopewell c. olmec & toltec b. anasazi & hohokam d. mississippians & cahokia

The correct option is "A. Adena & hopewell"

The Adena culture was a pre-Columbian civilization that existed in the center-northeast of the United States, between the years 1000 and 200 a. C. According to a Spanish history site, 1 existed between 800 and 400 a. C. The adena culture probably refers to several communities of ancient Amerindians who shared the burial mode and a system of rituals. Rests of the Adena culture have been found in many places, in the present States of Ohio, Indiana, West Virginia, Kentucky and parts of Pennsylvania and New York.

The Hopewell culture designates the Native American culture that developed along the rivers of the Northeastern and Midwestern United States from the 2nd century BC. C. until century V d. C. It succeeds the Adena culture and, like this one, it refers to the peoples of the Mound Builders - mound builders. In its heyday, it comprised the territories that go from the west of New York to the Missouri and from Wisconsin to the Mississippi, including the shores of Lake Ontario.

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