Onstruct an argument to show why you think that monogamy should remain as the only acceptable system of marriage in America

In norman Melcherts book The Great Conversation, with regard to Augustines situation and his scriptural interpretation, Melchert questions the moral desirability of such behabior for us today, In ancient timessays Melchert, It was allowable for men to have many wives, but now it is not allowable. Why?
In essay 2 pages (DOUBLE SPACED) construct an argument to show why you think monogamy should remain as the only acceptable system of marriage in America. (Philossophy paper)