What is the first doorway to the west?

The "First Doorway to the West" typically refers to the city of Pittsburgh, Pennsylvania. This designation stems from its historical significance as a key junction for westward expansion in the United States, particularly during the 18th and 19th centuries. Situated at the confluence of the Allegheny, Monongahela, and Ohio Rivers, Pittsburgh served as a critical transportation hub for settlers and goods heading west. Its strategic location facilitated trade and migration, earning it the title as a gateway to the western frontier.