The significance of the mining frontier
{"Image DocumentName": "The significance of the mining frontier", "Image ImageDescription": "Expanded settlement from the Rocky Mountains to the Sierra Nevada range. People learned of the great mineral resources to be found and mined. It provided impetus for railroads, farmers, and the cattle ranchers to follow. Many farmers would stay and farm after the mines were emptied. Cattle ranchers had a population to sell their product. Between  12 billion in gold and silver was found.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}