Question

At the beginning of which century the world population was one billion?
twentieth century
twenty first century
nineteenth century
seventeenth century​

Answer 1

Answer:

twentieth century is the correct answer

Answer 2

At the beginning of 19th century the world population was one billion.

• It took the meaningful whole of human history until 1804 for the local population of the world to typically reach 1 billion.  
• The next billion, however, sufficiently advanced just 100 years later, in 1927.  
• After that, the growth has rate accelerated, with three billion in the year 1959, four in the year 1974, five in the year 1987, six in the year 1999, and as of now seven billion.