Punctuated equilibrium states that choose one:
a. we are not able to determine the rate of evolutionary change, because of the incompleteness of the fossil record.
b. evolutionary change happens at a constant, slow rate.
c. extinction events occur because of large, catastrophic events such as floods.
d. evolution takes place very slowly but has short periods of rapid change.

C

Explanation:C. extinction events occur because of large, catastrophic events such as floods.

mali had been a state inside of the ghanaian empire. after ghana fell because of invading forces and internal disputes, mali rose to greatness under the leadership of a legendary king named sundiata, the "lion king." the songhai empire, already weakened by internal political struggles, went into decline.

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.