Answer:
B) Mountains protected the region from invaders and D) Rivers flooded, providing fertile soil and water for irrigation.
Explanation:
hope i helped you out !!!
Since you did not give choices for the rites of passages, I will just give you the answers. According to Arnold van Gennep, there rites of passages have different phases - mainly there are three available. There are separation, liminality, and incorporation, in a respective manner. These answers are phases which means that they should be followed and considered step by step.