Answer:
They will have an Exogamous marriage.
Explanation
Exogamous marriage or exogamy is the custom of marrying outside a predetermined group of individuals to which an individual has a place. Additionally, blood family members, union with individuals from a particular totem, clan(s), or other groups might be prohibited. Something contrary to exogamy is endogamy. Exogamy was acquainted with averting marriage between blood relations, particularly among siblings and sisters, which had been standard in a past condition of indiscrimination.
