Question

 Established in the 1920s, what historic double-digit highway connected Chicago and Los Angeles?

Answer 1

Established in the 1920s, the historic double-digit highway that connected Chicago and Los Angeles was U.S. Route 66. The highway became known as the "Mother Road" and was an important part of American culture, inspiring songs, movies, and books.

Answer 2

The historic double-digit highway that connected Chicago and Los Angeles was Route 66, also known as the "Mother Road." Established in the 1920s, Route 66 spanned over 2,400 miles and became a vital transportation route for travelers, migrants, and businesses. 

The iconic highway passed through eight states, including Illinois, Missouri, Kansas, Oklahoma, Texas, New Mexico, Arizona, and California, and featured unique roadside attractions, such as diners, motels, and gas stations.