The louisiana purchase secured u. s. control of the mississippi river. as a result, the mississippi river became a highway for agricultural products from the old northwest to reach world markets through which port city?

New Orleans

Explanation:

Several of the main inland cities of the country are along the Mississippi River, including: Minneapolis, Saint Louis and Memphis. It is 2,340 miles long and crosses almost all the continental US from north to south, starting in Lake Itasca (Minnesota) to the Gulf of Mexico. The last city before the river reaches the Gulf of Mexico is New Orleans.

answer; burned it;