What two highly profitable commodities were traded in Timbuktu? salt and gold copper and iron silk and spices rice and wheat

What role did natural resources play in african politics?

The two-factor theory of emotion was proposed by

Fallon is on her way to work when she sees a little boy, who is crying and apparently lost. seeing the crying boy makes fallon very uncomfortable and upset. to reduce these negative feelings, fallon stops to the boy find his parents. which theory best explains fallon's behavior?