Why does the depth of a river increase downstream

Hurry on the map above, arrow 1 points to a region where most people are

Islam and the arabic language spread throughout north africa in the 600s primarily through a. african traders b. american colonists c. european explorers d. middle eastern armies select the best answer from the choices provided

What is one early technological advance that shaped culture? a the use of fire b the discovery of arable land c family units. d migration