Why was colonel William Cody known as buffalo bill?

Colonel William Cody, known as Buffalo Bill, earned his nickname due to his role as a buffalo hunter during the construction of the Kansas Pacific Railway in the late 1860s. He gained fame for killing thousands of buffalo to provide meat for the railroad workers, showcasing his exceptional hunting skills. Later, he became a prominent showman, founding "Buffalo Bill's Wild West," which celebrated the American frontier and its figures. His larger-than-life persona contributed to the lasting legacy of his name in American culture.