It started in the 1870's and it ended in the 1950's
Hoped This Helped
Answer:
the great depression
Explanation:
the united states was more focused on their own problems. it the 1930s was right when the Great depression was happening, so FDR's main focus was to recover the United States' economy.
The Columbian exchange of crops affected both the Old World and the New. Amerindian crops that have crossed oceans—for example, maize to China and the white potato to Ireland—have been stimulants to population growth in the Old World. The latter’s crops and livestock have had much the same effect in the Americas—for example, wheat in Kansas and the Pampa, and beef cattle in Texas and Brazil. The full story of the exchange is many volumes long, so for the sake of brevity and clarity let us focus on a specific region, the eastern third of the United States of America.
Mass production is the production of large amounts of Standardized products including and especially on assembly lines
No Spartacus did bot fight any animals <span />
