Mississppi River
Missouri
the ohio river
The Ohio River.
Ohio
gateway to the west
Mississippi, in the US
The river that is known as the Gateway to the West is the Missouri River. It flows into the Mississippi River at St. Louis, MO.
This strategic was the gateway to the west
Missouri river
St. Louis, Missouri
Calgary, Alberta
Well its called the Gateway Arch and St. Louis is the Gateway to the West theres your answer hope its useful!