Write 2-3 complete sentences to describe the lifestyle in United States

There are many families in the United States that consist of one single parent and children as a result of divorce or being unwed. In most families, once the child has become a teenager and graduated from high school, he or she leaves the home and leads an independent lifestyle.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

the answer is mass marketing.