Answer:
Explanation:
Gold rush and mining opportunities (silver in Nevada)
The opportunity to work in the cattle industry; to be a “cowboy”
Faster travel to the West by railroad; availability of supplies due to the railroad.
The opportunity to own land cheaply under the Homestead Act.
Answer: B? I'm not very sure but from my research I suppose it's this.
Most likely A because The north at the time was manufacturing to make its money
