There are four primary types of economic systems in the world: traditional, command, market and mixed. Each economy has its strengths and weaknesses, its sub-economies and tendencies, and, of course, a troubled history.
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It's four. The Romans were fine as long as they payed taxes
The text referenced here is The Coeur d'Alene Miners' Uprising. The central idea is that the miners took great efforts to protect worker's rights. The correct answer thus, is C.
<h3>How to determine the central idea of a text</h3>
The central idea of a text is usually stated at the beginning of paragraphs.
It is also stated in the concluding part of the sentence of a paragraph as a summation of the information presented in the body of the main text.
See the link below for more about Central Ideas of a text:
brainly.com/question/1914191
