Final answer:
In some cultures, the practice where cousins are encouraged to marry for maintaining kinship ties and continuing family alliances is termed maintaining consanguineal ties or endogamy.
Step-by-step explanation:
The practice of cousins marrying to maintain ties between kin groups and to uphold traditions and alliances established by previous generations is known in some cultures as maintaining consanguineal ties or endogamy. Endogamy is the cultural practice of marrying within a specific social group, caste, or ethnic group, rejecting others on such a basis as being unsuitable for marriage or other close personal relationships.
Meanwhile, exogamy is the social norm of marrying outside one’s social group. The goal of these marriages can often be to strengthen family ties or to preserve cultural or economic status. These customs are deeply rooted in the cultural and social codes of a society and can vary widely from one culture to another. While in some places, marrying a cousin is legally restricted or culturally frowned upon, in other areas, it can be seen as a way to maintain the bloodline or strengthen the family bond.