Why is Ancient African civilization difficult to reconstruct?

I think D

Explanation:

I believe D because many languages are in Writing of African history and has been challenging and mostly difficult, due to a lack of both comprehensive written records and holistic archaeological evidence that covers all the zones of Africa from past times.

D bacause usydbsia ueuevsusgao iayebdiab jauevruw

the correct answer is ) possibility.

demonstrating opportunity cost is done through production possibility.

the opportunity cost can be demonstrated using the production possibility frontier or curve. this graphic shows the total number of possibilities for two products when we have the resources needed and used in an efficient manner. the main resources could be money, labor, and technology. the curve shows that the production of one good increases when the production of the othe

1) d

2)c

3)b

4) a

5)c

6) c