The first box is number one.
Answer:
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.Explanation:
George Washington is the first president of the United States. Then he elected unanimously by the electoral college after leading the continental army from the Revolutionary War.
It is called the Watergate scandal and it happened in June 17, 1972