Funny how the Canada and the U.S. border came to be! Prince George, BC, Canada / 101.3 The River The Rick Kelly Blog June 04, 2014 02:17 pm Canada and The U.S.A. share the largest border in the world. This video explains how it all came together in a cool fun way.! The kind of facts you will want to share around the campfire this summer after a few smores!!