Paraguay, uruguay and argentina have all recently become a. military dictatorships c. democracies b. extremely wealthy d. members of the un

c. democracies

Explanation:

Although most south american countries had military dictatorships that characterized by the use of murders, torture and repression, they had become democracies in the last decades.

Paraguay was under a military dictatorship from 1954 to 1989. In 1992 the Constitution stablished a democratic government.

Uruguay was under a military dictatorship from 1973 to 1985. On November 25, 1984, elections were held, leading the way to Uruguay's democratization.

Argentina was under a military dictatorship from 1976 to 1983. As a result 30,000 persons were "disappeared".

answer: an oligarchy is a political system in which the government is run by a group of noble families, or the elite wealthy members of a society. a present day oligarchic government is iran.

explanation:

some american cities felt workers were being oppressed by business monopolies