Final answer:
The Comstock strike in Nevada brought thousands of people to mine silver.
Step-by-step explanation:
The Comstock strike in Nevada brought thousands of people to mine silver. In 1859, Henry T.P. Comstock discovered a blue-colored vein that turned out to be the first significant silver discovery in the United States, known as the Comstock Lode. Within twenty years, this mine yielded over $300 million worth of silver.