How did Charles crocker get his money?

Charles Crocker made his fortune primarily through his involvement in the construction of the Central Pacific Railroad during the 19th century. He was one of the "Big Four" entrepreneurs who financed and directed the railroad's expansion, which was critical for connecting California to the eastern United States. Additionally, Crocker invested in various businesses and real estate, further contributing to his wealth. His strategic decisions and leadership in railroad construction led to significant financial success.