What is a reason that the parenting stage could extend for a long period of time? a child may live at home past age 18. the parents may have many children over a wide range of years. single parents could remarry and introduce young stepchildren into the family. all of the above

bruh  all  of the above that's it. :)

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."