Final answer:
Virginia City, Nevada is considered a boomtown due to its population explosion overnight.
Step-by-step explanation:
Virginia City, Nevada is considered a boomtown because its population exploded overnight. It experienced a massive increase in population due to the discovery of silver in the Comstock Lode in 1859. The city quickly grew from a small settlement to a bustling town with thousands of people flocking in search of wealth and opportunities.
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