They came to North America after French explorers came there and started a fur trade, which would be a good source of money for the French.
It is false that Communism was the dominant economic force of the twentieth century, although it certainly overtook a great deal of territory. Capitalism was still overall dominant.
Cowboys spent over 12 hours in the saddle, they suffered from rheumatism, damage to their spines and a wide variety of injuries related to their work.
Answer:
The stock market crashed.