In many cases rivers begin at a source that has snow fall. The run off from melting snow can be the beginning of a river. Small streams built upon the items mentioned above can combine with other small streams and thus become the beginning of a river.
When rain falls on the continental divide.
It begin to change when they first got settled the indus valley river
river systema river system.
indus river
The Rhine River The Rhone River
Xingu River
any river to be honest :)x
were does the bow meet the elbow river
The world's largest river system is not the Nile. It is the Amazon River.
Colorado River system is where the Green river flows to.
The Mississippi River system.
Rivers in Europe that begin with the letter A:Aar River (Switzerland),Acheloos River (Greece),Ahr River (Germany),Aliakmonas River (Greece),Alt River (England),Arrow River (UK),Annas River (England),Mountains in Europe that begin with the letter A:Alps,Cities in Europe that begin with the letter A;Aarhus, DenmarkAberdeen, ScotlandAlicante, SpainAmsterdam, NetherlandsAncona, ItalyAngers, FranceAntwerp, BelgiumAthens, GreeceAugsburg, GermanyCountries in Europe that begin with the letter A;Albania,Andorra,Armenia,Austria,