In January 1876, the Sioux and the Cheyenne were ordered to leave the Black Hills area of South Dakota, which had been designated by treaty for them because gold was discovered in the Black Hills of South Dakota and the US government was unable to keep gold prospectors and others out of the area which had been given to the Sioux in a treaty. I hope that this is the answer that you were looking for and it has helped you.
... frustrations with how independence had led to situations where caudillos (authoritarian leaders) rose to power.
Bolivar had wanted a united Spanish America, a great nations, but the wars of independence had tended to result in charismatic military rulers leading their own countries in authoritarian ways -- what we today would call dictators.
April 4, 1968: Martin Luther King Jr. was shot and killed outside the Lorraine Motel where he was staying in Memphis. He had come there to support sanitation workers in their strike. More than 300,000 attended his funeral. Today, the restored Lorraine Motel has been transformed into the National Civil Rights Museum.
<span>Differences between the North (abolitionist) and South (pro-slavery)</span>