What is the second longest river in North America?

Question

bobpursley · Answer

http://en.wikipedia.org/wiki/List_of_rivers_by_length Pay attention to the color code (lght blue).

Ms. Sue · Answer

Geographers consider river systems. The Mississippi-Missouri system is the longest river in North America. The MacKenzie-Peace system is second longest.

http://en.wikipedia.org/wiki/List_of_rivers_by_length