The Louisiana Purchase gave the United States control of which major river?

• A. Pacific Ocean
• B. Mississippi River
• C. Gulf of Mexico
• D. Arctic Ocean

Answer: (B)

Gaining access to a major river was essential for moving people and goods as the United States expanded west. When the Louisiana Purchase was made in 1803, it secured control of the Mississippi River, a crucial waterway that let farmers and traders ship crops from the interior down to New Orleans and into the Gulf of Mexico. This made westward expansion more feasible and helped the young nation grow economically.

The other options don’t fit because they aren’t the river connected to the Louisiana Purchase. The Pacific Ocean and Arctic Ocean are far from the purchase area, and while the Gulf of Mexico is the body of water the Mississippi flows into, the key river being gained control of is the Mississippi.