C. Trade routes were opened and maintained
The Mississippian culture adopted the Mexican's the central ceremonial plaza building style.
The Mexico' central ceremonial plaza building style included the pyramidal and oval earth mounds design. The Mississippian culture spreads in the area that called Mississippi now. This culture is the last prehistoric development of culture in North America. This era began in the AD 700.
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Answer:Officers are commissioned by and ultimately derive their authority from the President and are confirmed by the U.S.
Explanation: because
