Because it is a common perception that some physical attributes is associated with certain characteristics.
For example, obesity usually associated with laziness and unassertiveness because of most people aware that it took discipline to obtain good body.
But on the contrary, people also usually associate obese people with kindness and heartwarming nature
Answer: Source amnesia
Explanation:
Source amnesia is the inability to remember where, when or how recent an information was acquired while retaining the effective knowledge.
Africa is known for their precious diamond mining so diamond is one. Oil is also another big thing
