The United States, and Germany.
Answer:
The economy of the Soviet Union was based on a system of state ownership of the means of production, collective farming, industrial manufacturing and centralized administrative planning. The Soviet economy was characterized by state control of investment, a dependence on natural resources, shortages, public ownership of industrial assets, macroeconomic stability, negligible unemployment, high growth rates and high job security.
Explanation:
Mansa Musa inherited a kingdom that was already wealthy, but his work in expanding trade made Mali the wealthiest kingdom in Africa. His riches came from mining significant salt and gold deposits in the Mali kingdom. Elephant ivory was another major source of wealth.