The oldest civilization in the americas is believed to be the a. inca b. aztec c. olmec d. maya

The Olmec is influences continued to appear in many later Mesoamerican civilizations. Cities of the Aztecs, Mayas, and Incas were as large and organized as the largest in the Old World, with an estimated population of 200,000 to 350,000 in Tenochtitlan, the capital of the Aztec empire.

is this a multiple choice question? if so, could i see the answers to give you the right one!

your answer will be b. improving roads, bridges, and other infrastructure. hope i !