Many-cultures-practice-polygamy-Discussion-Question-philosophy-homework-help

Many cultures practice polygamy. Muslims may have up to four wives under Koranic law; the King of  Ashanti (in West Africa) was limited by law to 3,333 wives. Polygamy is not adultery; neither of these cultures sanctions extramarital sex. Is polygamy immoral? Why or why not?

Must be answered in at least 300 words. Original answers only. No plagerisim!