What is true about the early history of every developed country?

People often use the term “Third World” as shorthand for poor or developing nations. By contrast, wealthier countries such as the United States and the nations of Western Europe are described as being part of the “First World.” Most Third World countries are former colonies. Having gained independence, many of these countries, especially smaller ones, were faced with the challenges of nation- and institution-building on their own for the first time. Due to this common background, many of these nations were "developing" .

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