Question

at the Beginning of which enter y the world population was one billon​

Answer 1

Answer:

1597

Explanation:

in 1597 the population was one billion

Answer 2

Answer:

here is your answer

Explanation:

1804

It is estimated that the world population reached one billion for the first time in 1804. It was another 123 years before it reached two billion in 1927, but it took only 33 years to reach three billion in 1960

I hope you understand!!