The 19th-century transportation route that connected Idependence, Missouri and Santa Fe, New Mexico runs the same path as what east to west highway?
U.S. Route 56: U.S. Route 56 (US 56) is an east–west United States highway that runs for 640 mi in the Midwestern United States. U.S. Route 56:  Much of it follows the Santa Fe Trail.
i don't know