Which 2 states in the US were overrun by gold diggers at about the same time?

California and Alaska were both overrun by gold diggers during significant gold rushes in the mid-19th century. The California Gold Rush began in 1848, attracting a massive influx of fortune seekers, while the Klondike Gold Rush in Alaska started in 1896, drawing prospectors to the Yukon Territory. Both events significantly impacted the development of their respective regions and the broader U.S. economy.