Confluence of the Allegheny and Monongahela WSJ Crossword Clue

Think of a major river that begins its journey where two others unite.

The ???? is a major river in the United States that flows from Pennsylvania to the Mississippi River.

The clue refers to the geographical location where the Allegheny and Monongahela Rivers meet to form the ???? River. This confluence is a well-known geographical fact, particularly in the context of Pittsburgh, Pennsylvania.

State along a river of the same name, Home of Columbus, Home of Xenia, the U.S.'s largest city whose name starts with "X", Reds and Browns’ home, Birthplace of seven U.S. presidents