Explain the process weathering, erosion and the formation of the Grand Canyon

answer; the basal forebrain;

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.