Inevitably, when civilizations clash, one is often not destroyed.  However, the harm caused is irreparable. Shortly after the end of the American Civil War, the industrialized growth of American business interests looked for new markets and myriad ways to make money. They looked west - empty land, except for some native tribes and in many white minds, savages. Then GOLD was discovered in the Black Hills of South Dakota, Sacred Land of the Lakota Sioux.  Any student of history could predict a firestorm brewing.