What fact would you select to support your understanding of customs?

The fact that you would select to support your understanding of customs is "According to their customs, when Okonkwo beats his wife during the Week of Peace, he endangers the whole community by angering the earth goddess." (A)

in what story are we looking at?

because of all the immigration, america became one big melting pot. the diversity of cultures from all over the world made america somewhat divided as well. people that immigrated stayed with their kind, and their traditions, while native born americans stayed with their kind and their traditions. normally, people born in american scorned the immigrants as well. the new religions also divided america. in summary, it took away from the american culture and identified america as the "melting pot."