"The Gold Rush era was an amazing time in our country's history. California had just been occupied during the Mexican-American War and wasn't officially a U.S. territory yet when gold was discovered in 1848. Suddenly the whole world was electrified by the news and tales of men digging vast amounts of wealth out of the ground, even finding gold nuggets just lying around. Within five years, 250,000 miners dug up more than $200 million in gold--about...