1815 eruption of Mount Tambora

"On April 10th, 1815, six thousand miles away from here, on an island in Indonesia, a volcano erupted. It sent a massive plume of ash into the air that eventually encircled the globe. A year later, 1816 became “the year without a summer.” Incessant rains fell here in Norway, Britain, China and the U.S. It snowed 20 inches in July in Boston. Crops failed. Livestock died. People starved. Food riots. Looting. Burning of cities. Floods of refugees. Epidemics of typhus. And it took decades to recover. Millions died in places just like this — the worst famine of the 19th Century. No one saw it coming. With famine, no one ever does, until it’s too late."