The country in the world with the largest population is_?

China

Explanation:

China has a population of about 1.39 billion people, give or take a few and India comes in second, not too far behind, with 1.31 billion people. China alone makes up more than 18 percent of the world population. In hopes to control the population, they implemented the one-child policy which put a limit to the number of children parents should have. It was abolished though by 2015 because of the detrimental effects on the skew of the age population. There were too many old people and too little young people, which had an effect on the economy of China as well.