In which year did Sitting Bull's Sioux defeat the 7th Cavalry in Custer's Last Stand?

The Sioux, led by Sitting Bull, achieved a significant victory over the 7th Cavalry during the Battle of the Little Bighorn, commonly referred to as Custer's Last Stand, in the year 1876. This battle took place on June 25 and 26 of that year, and it represented one of the last major instances of Native American resistance against U.S. government forces following the westward expansion.

In this context, the significance of the year 1876 is underscored by the tensions and conflicts that were prevalent during this period. Following the discovery of gold in the Black Hills, which were sacred to the Sioux, many settlers and miners encroached on their land, leading to a series of conflicts—including this decisive battle where General George Armstrong Custer and much of his command were overwhelmed by a coalition of Native American tribes.

The other years listed do not correspond with the timing of this significant event in U.S. military history; 1862, for example, is associated with other conflicts in the Civil War, while 1642 and 1754 are significantly earlier and related to different historical contexts altogether. Thus, 1876 stands out as the pivotal year of this decisive Native American victory.