Missouri and the Mississippi are the two longest.
http://ga.water.usgs.gov/edu/riversofworld.html
Nile Amazon Yangtze Mississippi - Missouri Yenisei - Angara - Selenga
The Mississippi and Missouri rivers.
One of the two longest rivers in the USA is the Mississippi River.
The Missouri River and the Mississippi River are the two longest rivers that are completely within the US. The Yukon River is the longest river but originates in Canada.
The two rivers that in the United States that make up the longest river system in north America are the Missouri and Mississippi river.
Missouri and Mississippi
Missouri and Mississippi
Ohio and Colorado
The Missouri and the Mississippi
The two longest rivers in the U.S. - Mississippi - Missouri 3,902 miles Yukon -1,980 miles
just search for the to biggest rivers in America. use Goggle! The Mississippi and the Missouri are the two longest rivers, but the Mississippi, the Ohio, the Columbia and the Yukon rivers are the top four in terms of average discharge at the mouth.
The Mississippi and the Missouri are two large US rivers.
The Ohio and Mississippi rivers to name two.