Is the marriage form permitting only one spouse; is the marriage form permitting more then one spouse at a time?

Is the marriage form permitting only one spouse;

Monogamy is the marriage form permitting more then one spouse at a time?

yes, is monogamy.

when a husband has 2 or more wifes in the same time is called POLYGAMY

This is what i found on google “eightin 1997, the mccaughey septuplets were born in carlisle, iowa. multiple births of as many as eight babies have been born alive, the first set on record to the chukwu family in texas in 1998; one died and seven survived. in 2009, a second set, the suleman octuplets, were born in bellflower, california.” i was surprised about this . i don’t want to have that many babies .