I’m pretty sure it would be c
It was known that there was an economic boom taking place just after the second world war. It could be due to effective economic policies implemented by various governments. Such policies include the reduction of the tax rates, and economies were regulated so as to avoid excessive spending.
The government outlawed slavery in 1981 and made it a crime in 2007. Estimates of the percentage of slaves vary from 10% to 20% of Mauritanian population.
Positive effects it gave us a way to spread our political beliefs. But at the same time it made people start fights because they did not feel the same about certain things so it created conflicts against people. But the good part about it is that it created a way people could spread their political beliefs and share their thoughts with others.