It is due to i believe the rise of cotton
Answer:
Ronald McNair was nationally recognized for his work in laser physics and was one of the thirty-five applicants selected by NASA from a pool of ten thousand. In 1984, McNair became the second African-American to make a flight into space. He was a mission specialist on the space shuttle Challenger.
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Answer:Many matured into advanced pre-Columbian Mesoamerican civilizations such as the: Olmec, Izapa, Teotihuacan, Maya, Zapotec, Mixtec, Huastec, Purépecha, Totonac, Toltec, and Aztec, which flourished for nearly 4,000 years before the first contact with Europeans.
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