What was red cloud involvement with the railroad?

Red Cloud, a prominent Lakota leader, strongly opposed the construction of the railroad through Native American territories in the 1860s. He believed that the railroad would encroach on Lakota lands and disrupt their way of life, leading to increased tensions with the U.S. government. As a result, he led Red Cloud's War (1866-1868) against U.S. forces to protect Lakota land and interests, ultimately resulting in the Fort Laramie Treaty of 1868, which recognized Lakota sovereignty over the Black Hills and halted further railroad expansion into their territory.