Answer:
while mesoamerican civilization knew of the wheel and basic metallurgy, the technologies became important. the earliest complex civilization was Olmec culture, which inhabited the gulf of mexico. (known for Olmec, Maya, Zapotec, Teotihuacan, Mixtec, and Mexica (or Aztec)
The issue of new gunpowder cartridges for the Enfield rifle in February 1857.
The Answer is Little Rock Nine.