Mexican people had to do farmers work. and the African had to be the slaves for the white people maybe you should hear those from. roll of thunder hear my cry that can answer it
Because they were driven away from their homelands by force
Answer:
Indus river (India): Harappa And the city of Mohenjo-daro
Nile river (Egypt): Ancient egyptian pryramid structures, obelisks, System of mathmatics, Medicine development, etc.
Huang he (China): The great wall of china build, development of budda religion, growing rice products.
Tigris-Euphrates (Mesopotamia): The wheel, plow tool, and cut canals and river connections.
Johannes Gutenberg was most commonly associated with the printing press.
