How did some retailers reach millions of people in rural areas in the late 1800?

In the late 1800s, some retailers reached millions of people in rural areas by utilizing mail-order catalogs, which allowed customers to browse a wide array of products from the comfort of their homes. Companies like Sears and Montgomery Ward capitalized on the expansion of the postal system, offering goods directly to consumers through the mail. These catalogs featured detailed descriptions and illustrations, making it easier for rural customers to make informed purchasing decisions. Additionally, the rise of the railroad network facilitated faster and more reliable shipping to remote locations.