Complete the sentence. Romans practiced square meaning that a man married only one woman.

The question is asking for the term that describes the practice of a man marrying only one woman. This is a term related to the social and cultural practices of the Romans. The term that fits this description is "monogamy". Monogamy is a form of marriage in which an individual has only one spouse at any given time. This practice was common in Roman society, where it was considered the norm for a man to marry only one woman.