Arkansas Post (ärˈkənsô) [key], community on the Arkansas River, SE Ark. Founded by the French in 1686 as a trading post, it is the oldest white settlement in the state; it became the capital of the Arkansas territory in 1819. Once an important port, Arkansas Post was a Confederate stronghold during the Civil War until it was captured by Union troops in 1863. Arkansas Post National Memorial is there (see National Parks and Monuments, table).
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