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.
Answer:
A. The US defeat of pirates in the Mediterranean
Explanation:
I just got it right on E D G E N U I T Y
A. they moved often in search of food
nomads normally travel, and don't stick in one place
