The 4 Main Types are:
Arranged Marriage: Arranged marriage is not forced, but the parents chose the spouse for their child.
Age: Different regions and cultures have a different idea of an ideal age to get married.
Traits: Generally, people in different regions and cultures have an idea of ideal traits of a spouse. For example, in North America we tend to value physical traits.
Religion/Government: The church and state combine to legalise marriages. Religion tends to provide models of behaviour, especially for parental roles.