Answer:
1. Archaeologists call these earliest people in the Americas Paleo Indians or Paleo Americans.
Paleon Indians or Paleo Americans are the name given to the peoples who first inhabited the American continent, arriving from Siberia, crossing the Boering Strait, which at the time was frozen and thus worked as a land bridge.
According to most estimates, these Paleo Americans arrived in the continent 16,000 - 12,000 years ago, although there is significant disagreement among some scholars over the exact time period.
2. The civilization that succeeded the Olmec were the Mayans.
The Mayans are one of the three main American civilizations, along with the Aztecs, and the Incas. The Mayans inhabited what is now the Peninsula of Yucatan in Mexico, Guatemala, and Honduras, and were an important civilization not only in economic and military terms, but also in terms of scientific development, especially in the field of astronomy.
They were forced to move because Andrew Jackson ignored the Court and forced them to move to new lands West of the Mississippi River. They had to walk all the way to their new homes, which is known as the Trail of Tears.
Hope that helps!
Former President Jimmy Carter was defeated by Reagan in the Election of 1980.