Your questions:
(a.)Please discuss what is an ideal marriage and what may be the main causes of the decline of marriage in the United States.
https://uvamagazine.org/articles/the_marriage_crisis
(b.)Considering that America is ranked 14th in education and lower in other important educational measures, what explains these low rankings among one of the wealthiest and most powerful countries in the world?
https://rankingamerica.wordpress.com/category/education/
(c.) In What ways are race, class and gender intertwined with physical and mental disorders?
https://www.psysr.org/jsacp/Collins-v6n1-14_61-83.pdf