Which transportation company became America's largest retailer in the early 20th century through its mail-order catalog business?

Before modern e-commerce giants revolutionized retail, transportation companies pioneered innovative retail models. In the late 19th and early 20th centuries, one transportation company became America's largest retailer, creating an empire through catalog sales and distribution networks that would inspire future retail giants. Test your knowledge about this fascinating intersection of transportation and retail history that shaped modern commerce.

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Sears, Roebuck & Co. (founded by a railway station agent)
Pullman Company (expanded from luxury rail cars to home goods)
American Express (originally a freight forwarding business)
Wells Fargo (leveraged its stagecoach network for retail delivery)