Answer:
20hours
Explanation:
Working up to 20 hours a day, cowboys drove the animals from one watering place to the next. They had to guard against predators (two- and four-footed), straying cattle, and stampedes at night. For his hard and dirty work the typical cowboy earned between $25 and $40 a month.
It was created to protect ad help former slaves after the war.
Beginning after Columbus' discovery in 1492 the exchange lasted through the years of expansion and discovery.
I think its water and iron