What were the years of greatest economic decline between 1921 and 1939?

Why did roosevelt support a “europe first” strategy even though it had been japan that had first attacked the united states?

How does the structure of the body of the declaration of independence support jefferson’s purpose

The service industry in the united states grew in the late 1800s. what was one effect of that growth? the number of people with jobs in factories as unskilled workers decreased. the number of people with jobs in factories as unskilled workers increased. the middle class grew as people took jobs as clerks, lawyers, and teachers. the middle class shrank as people left jobs as clerks, lawyers, and teachers.