farming, mining, service, and manufacturing are all answers to this question, but none of them are new.
service -nova net
maufacturing
Industry and trade grew rapidly, in the northwest, during the 19th century, due to the large population of immigrants. The convenient trade routes to Europe also contributed.
Catle Rasing
Two major industries grew rapidly in the US in the 1950's. One was the defense industry based on the fact a Cold War could could explode into a real war. The other major growth industry was the television news and entertainment industry.
the service industry
Cars; the movie industry; electric utilities; radio industry.
The popularity of ornate gilt pieces and the continued use of crystal, jet, and inexpensive stones grew during the 1950s.
The crime rate soared and organized crime grew rapidly.
The fledgling prefab industry grew during the post-World War II economic boom. As the economy and population grew, housing starts soared.
It grew rapidly once the right to organize was protected by law.
The middle class grew