How did civilizations that were far from rivers support agriculture, and how did this affect their development

a.they built canals to bring water to crops, which gave them a surplus to support a growing civilization.

b.they traded for water to support their crops, which gave their civilization a chance to survive.

c.they conquered other civilizations that were next to rivers, which gave them a new location to thrive.

d. they relied on water from neighboring civilizations, which in forming trade agreements.

theses are the questions it gave me so if someone can answer this it can someone.

do your own work

you really need to do your own work and stop cheating

it should be d or b but i'm sure it's d