Which is not an achievement of the indians of north america in the thousands of years before columbus's arrival? select one:
a. in the ohio river valley, indians built large earthen burial mounds.
b. near present-day st. louis, 10,000 or more people built giant earthen mounds.
c. people build a series of giant semi-circular mounds in present-day louisiana.
d. people in present-day arizona constructed a large circle of red-earthen boulders.

D. People in present day Arizona constructed a large circle of red-earthern boulders is the correct answer.

Explanation:

Native Americans have been living in Arizona for thousands of years and it is the state with the largest number of Native American population. The Navajo Nation which is the largest American Reservation in the US and Tohno Oodham Nation, both are located in Arizona. There are twenty tribes which are the member of Inter-Tribal Council of Arizona. More than twenty-five percent area of the Arizona state is reserved for tribals.

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