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🌎 Your #WITWW photo marks the spot of the former British legation in Washington, DC, where the Rush-Bagot Agreement was signed in 1817. The pact between the U.S. and Great Britain limited the number of naval vessels allowed to patrol Lake Champlain and the Great Lakes.

🌎 This unassuming apt complex stands where—more than two centuries ago—an internat'l agreement was reached to deescalate an arms race, signifying a key moment in U.S. diplomatic history. But, what and where? Submit your guess. We’ll return at 5pm with the #WITWW photo reveal.