From the prehistoric, our humanity had found a way to communicate or exchanging back and forth as well. That's is to build a group of people or organization in order to help each other and solve the neccesary problems. At first, we just called this is a group or a team which involves many members and individuals but later on, it became the society where all people had their own jobs and the rules were also set up. Society has the great impacts on the living standard of each households and the governments of each nations. Because of that, each countries is trying to improve the society to bring its best value to us.
A question what reading are you talking about?
It's around the 60s of age and 80s years for females.