Which Oklahoma city is known as the "Gateway to the West"?

The city known as the "Gateway to the West" is Oklahoma City. This designation stems from its historical significance during the westward expansion of the United States. Oklahoma City served as a crucial transportation hub for settlers moving westward in the late 19th and early 20th centuries. It was strategically located along major railroads and highways, making it a vital point for commerce and migration.

The nickname highlights Oklahoma City's role in facilitating access to the western territories. Over time, it has grown from its origins into a vibrant urban center while still holding onto this critical connection to the West. The other options, while significant in their own right, do not carry the same historical connotation regarding westward expansion and migration. For instance, Fort Smith served as a military outpost and is historically important, but it is more commonly associated with its role in the Indian Territory and as a gateway to other regions. Tulsa and Norman have their own unique identities and contributions to Oklahoma's history but do not have the same association with westward migration as Oklahoma City.