Question: where does the columbia river start and end
Answer: Columbia Lake; United States of America; U.S.A.; the USA; the United States; U. S. A.; USA; US of A; the US; United States; U. S.; U.S.; America; the United States of America; US; British Columbia; B.C.; BC; Oregon; Ore.; State of Oregon; OR; Oregon, United States; The Beaver State; Canada; 🇨🇦; can; British North America; CAN; CA; CDN; Dominion of Canada; ca; Pacific Ocean; Pacific Sea; Pacific; Clatsop County; Clatsop County, Oregon