The world population is estimated to be 7 billion people.
Because it provided a major step in the fight for freedom and they got an organized group together for the first time.
Land, label, capitol, and entrepreneur
I believe the answer is: 70%
The number come after accumulating the number of earning from each gender and divided it to the number of population that each gender has.
After the division, it's calculated that the median earning for men tend to be 23% higher compared to women's median earning