Please help (20 points for both) Thank you so much!

Why would the isolation of buddhist monks contribute to the religion’s decline?

7. how did the early egyptians use the flooding of the nile river to their advantage? they diverted the water to flood their enemy's lands and destroy their crops. they created an easier way to travel to the mediterranean sea and the indian ocean. they established a new water-based athletic event for the ancient olympics in greece. they devised an innovative irrigation system, which created a surplus of food.

Missile sites located mainly in the north of its superpower a: communist countries b: democratic countries