Locust Plague of 1874

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The Locust Plague of 1874, or the Grasshopper Plague of 1874, was a large swarm Rocky Mountain locusts over the Great Plains in the United States and Canada during the summer of 1874. The locusts caused hundreds of millions of dollar's worth of damage over an estimated 2 million sq mi (5.2 million km2). Residents described swarms so thick that they covered the sun for up to six hours. This was considered the last great swarm of this species of locust, which is theorized to have become extinct.

Read on Wikipedia · Image Henry Worrall, Public domain