During the Paleolithic Age, humans learned to

It is generally thought to have occurred sometime about 10,000 BCE. During that time, humans learned to raise crops and keep domestic livestock and were thus no longer dependent on hunting, fishing, and gathering of wild plants.

Explanation:

it foreshadows the theme of the paragraph and hints the topic that will be discussed in the paragraph!

there were 6 major base camps.   the base camps were located in alva, fort reno, fort sill, the madill provisional internment camp headquarters, mcalester and camp gruber.