The population numbers are wrong. There are 325 million, not billion, people in the USA. China has 1 billion people, There are 7 billion people in the word, expected to be 8 billion by 2025.
And if you count anyone that's ever lived, our history is vast. Humans have been around for about 200,000 years, but our written history only goes back about 5,000–6,000 years.
The population numbers are wrong. There are 325 million, not billion, people in the USA. China has 1 billion people, There are 7 billion people in the word, expected to be 8 billion by 2025.