US CITIZENSHIP TEST PREPARATION

Detailed explanation-1: -The Mississippi-Missouri-Jefferson: At 6, 275 kilometers (3, 902 miles) the Mississippi-Missouri-Jefferson River system is the fourth longest in the world and the longest river in the United States.

Detailed explanation-2: -The two longest rivers in the United States are the Mississippi River and the Missouri River. The Mississippi River runs through ten U.S. states. It starts in Minnesota near the border we share with Canada. It ends in Louisiana.

Detailed explanation-3: -The longest river in the world, measured from its mouth to its most distant, year-round source, is likely the Amazon, which flows 4, 345 miles from the Peruvian Andes through Brazil to the Atlantic Ocean.