The answer is 70 years.
What is a developing country?
A developing country is a sovereign state with a less developed industrial base and a lower Human Development Index relative to other countries. However, this definition is not universally agreed upon. There is also no clear agreement on which countries fit this category.
Why developing countries are poor?
When determining whether a country is “developing,” there are three criteria to take into account. These three criteria are low-income, human resources, and economic vulnerability. At least half of the world's population lacks access to essential health services.
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