Canadasharesthelongestinternationalborder(边界)intheworld...
问题详情：Canadasharesthelongestinternationalborder(边界)intheworldwiththeUSA,whichis8,891kmlong.ThelongestpartoftheborderissharedwiththeUSstate,Alaska,anditisabout2,475kmlong.Hereismoreinformationabout...