Answer:
I don't no this answer of
There were no colleges or universities where colonist could earn degrees.
The All American Canal is your answer !
It's answer B. You're welcome.
The 1920s in the United States, in the years leading up to the great crash of 1929, were a period of rapid economic development, brought about in many ways by mass production during and after World War I. A rebirth of advertising allowed more of these goods to be purchased, which greatly increased US GDP.