Question: Are Karangwa River and Jefferson River both located in the same country?
Sentence (from "Beaverhead River"): In 1805, Captain Meriwether Lewis traveled up the Jefferson and Beaverhead first, but when the rest of the expedition came, a sign Lewis had left at the confluence of the Beaverhead and Big Hole telling them to follow the Beaverhead had been cut down by a beaver, and the expedition traveled up the Big Hole instead.
Relevant evidence: No