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It took about 12 years for the global population to grow from 1 billion to 2 billion, reaching the latter milestone in 1927. The population reached 1 billion around 1804, and this rapid growth was influenced by advancements in medicine, agriculture, and sanitation during that period.

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3w ago

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How many more years did it take for the population to grow from 1 billion to 2 billion than it is estimate it will take for the population to grow from 4 billion to 5 billion?

It took approximately 12 years for the global population to grow from 1 billion to 2 billion, reaching that milestone between 1804 and 1916. In contrast, the population is estimated to take about 13 years to grow from 4 billion to 5 billion, expected to occur between 1974 and 1987. Therefore, it took 1 more year for the population to grow from 4 billion to 5 billion compared to the growth from 1 billion to 2 billion.


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