When did the world population reach 1 billion?

Answer 1

1804.

It is estimated that in 1804, there were one billion people on the planet.

If you scroll down the page of this website, you can see an interactive and interesting graph that shows the historical growth of the human population.

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Answer 2

The world population reached 1 billion around the early 19th century, specifically in the early 1800s.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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