Answer:
d
Explanation:
The type of economy that is also known as capitalism would be a "market economy," and it would be "d. How should it be ensured that goods and services are paid for?," that is not a key economic question, since the consumer "answers" this.
Answer:
It is described as a separation procedure that separates two immiscible liquids. Pouring away the clear topmost layer of liquid accomplishes this. Separation of a mixture of oil from water is an example of decantation.
Is significant, but unpredictable.
Answer:
Accomplished"World peace and gave rise to independent States
Devastated"the world's economy was collapsed and over 69 million people died