Which country has the largest population in the world?
As of 2021, China has the largest population in the world with an estimated population of approximately 1.4 billion people.
Complete the following task based on the instruction and optional input provided.### Instruction:
Which country has the largest population in the world?

### Output:
As of 2021, China has the largest population in the world with an estimated population of approximately 1.4 billion people.