Where and what is the longest River in the WORLD

He has gained renowned for his strength, he swam them all but the Nile.-The combination of the Mississippi up to St. Louis and then the major flow of the Missouri to its end is a major contestant - the north south flow called the Mississippi would probably not have named that way if explorers had come in from the south or west rather than the north and northeast.But Wikipedia explains the complications and says roughly what the first answer says http://en.wikipedia.......