2. Why were these items important commodities (raw material/agricultural
product) to the people in the Sahara and savanna?

Look at explanation

Explanation:

It helped them becuase agriculture helped produce food, and they can craft materials out of raw material

The perception of self that is close to what we personally experience is called: C. Congruence

Congruence exist when how we see our environment is compatible that the actual condition. having congruence is important for people who want to stay in control of their life goals. People who live without congruence would either overvalue or undervalue themselves and prevent themselves from measuring their own position.