Which sentence, if inserted between sentence (2) and sentence (3), would make the BEST addition to bridge the gap between what the two sentences are saying?
I NEED HELP QUICK!!!

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."

hi,   i believe the outlines that were supposed to be showing at the sentences, are not. could you highlight them somehow?