Answer:
Psychology
Explanation:
I think he was inspired by evolution and wanted to see how everything worked
The two primary reasons for the graying of America
Census of baby boomers
Better medical treatment, living longer
I'm guessing estrogen, since that's a female hormone but i'm not sure.
Answer: This is FALSE
Explanation: In today's world, where technology has made it more easier to pass out information to people, it will be very difficult for a particular tribe to be in leadership for long where another tribes are there. This will cause agitation among tribes and violence among the people.
The introduction of democracy by many nation's, has made it easier for people to select the one to lead them, and if this person has not lead with uttermost deligency to service, he or she will be removed during the next election.
Though it may be true for one tribe to hold on to leadership position for long. This only happens to a place where the people living in such territory are tribal, the majority tribe will always vote for a candidate from their tribe to lead, this will always make the voting to be bias based on tribe.