The type of economic system when government owns the factors of production, answers the question of who, what and how to produce, and eliminates choice and competition is called a command economy. It is the opposite of a market economy.
The factors that made it difficult for Eastern Europe to improve its water quality were outdated sewer systems, raw water quality, worn-out water utilities and unskilled employees. So we can say that four options given in the question fits the bill perfectly. These basic infrastructural reasons were responsible for being a hurdle towards improving the water quality. <span />
i think it is B
Mongol Rule and the Yuan Dynasty
Answer:
Droughts, farmers overgrazing the land, etc., caused the Dust Bowl.
Explanation:
The Dust Bowl was caused by several economic and agricultural factors, changes in regional weather, farm economies. It was also caused by farmers, misusing the land, which damaged crops and killed livestock.
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