8. What event marked the end of the Plains Indians'resistance to westward expansion? A) The Homestead Act B) The Dawes Act C) The Battle of Little Bighorn D) The Wounded Knee Massacre

The event that marked the end of the Plains Indians' resistance to westward expansion was:<br /><br />D) The Wounded Knee Massacre<br /><br />The Wounded Knee Massacre occurred on December 29, 1890, and is often considered the event that ended the armed resistance of Native American tribes in the Plains against U.S. government policies and westward expansion.