U.S. state capital that rhymes with 9-Across (not 7-Across!)

PIERRE

Think of the capital where Lewis and Clark’s expedition famously explored nearby lands.

This clue plays on rhyming words to point you toward a U.S. state capital. The answer "Pierre" (the capital of South Dakota) rhymes with whatever word fills in at 9-Across—just make sure you’re not confusing it with the unrelated 7-Across. The hint about "not 7-Across" is there to steer you away from mixing up similar-sounding clues in the puzzle.