C Why did early settlers of Oklahoma choose sites along rivers as a place to establish villages and towns?

They need the water to support their agriculture.

Explanation:

At that time, irrigation technologies that can transport water to a far location hasn't been fully developed.

Building a settlement near the rivers will give the settlers with the capability to obtain enough water sustain their crops and feed their farm animals. This help them in producing enough food source to survive and steadily improve their economy.

the california missions began in the late 18th century as an effort to convert native americans to catholicism and expand european territory. there were 21 missions in all, lasting from 1769 until about 1833.   the missions were built by the spanish starting in 1769 in order to “colonize” the territory of alta california. so the missions were important because they were the means of settling california. it also wanted to keep other european countries out of alta california. building settlements along the coast would them meet these goals. missionaries wanted to convert the indians to the roman catholic faith. california indians did much of the work to build missions.