Allison and bob have chosen not to have any children because they feel their careers are more important. according to sociologists, they are known as

Child-free people

Explanation:

There are several reasons for sociologists to say that these kind of people and (even 7 brutal and ruthless reasons why women don't want to have children according to google search engine investigation)  diverse crucial researches on that behalf stating this conclusions:

That kind of people are

1 Selfish (but ironically)

2 Happier.

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.