Question

The members of obierika's extended family sit in a half-moon. when his in-laws arrive, they complete the circle. what is the significance of the seating arrangement?

Answer 1

I believe the answer is: the two families unite as they meet and sit together

This sitting position indicates the unification of two families in their tradition. It indicates that from that point onward, each members of both families would treat the others as their own blood and would come to each others' aid everytime a threat/problem arise.