What historical and cultural factors have differentially influenced the cohort of people who are currently aged 65 to 75

[answerhappygod]

What historical and cultural factors have differentiallyinfluenced the cohort of people who are currently aged 65 to 75 andthose aged 35 to 45? What is rectangularization? What are theeconomic, political, and social implications of the increasingrectangularization of the survival curve in the U.S.?
So, how we can describe any gender differences that mayarise in the ability of older people to control resources. Giveexamples of such control in the U.S. and other countries.