Thomas Jefferson called it "a fire bell in the night" that woke him with terror—

1820 Event

Missouri Compromise Signed: Slavery Gets a Line on the Map

Thomas Jefferson called it "a fire bell in the night" that woke him with terror—and he wasn't even in office anymore. The Missouri Compromise drew a line at 36°30' latitude, carving America into two nations occupying the same map. Henry Clay brokered the deal in backroom negotiations that lasted months, trading Maine's statehood for Missouri's, one free state for one slave state, keeping the Senate perfectly balanced at 24-24. But here's what nobody expected: that arbitrary line would become a tripwire. Every new territory afterward became a crisis. Kansas would bleed. The compromise didn't prevent civil war—it set the timer for exactly forty-one years.

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March 6, 1820

206 years ago

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Missouri Compromise Signed: Slavery Gets a Line on the Map

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