Trivia: What contributed to the decline of the number of milkmen in the U.S.?
Home refrigeration
Laws banning milk delivery
Invention of Coca-Cola
Rising price of uniforms
Correct Answer: Home refrigeration
So why is this answer correct? : In the late 19th century, many Americans relied on milkmen to deliver fresh dairy to their homes. Since refrigerators did not exist to keep milk cool, people needed daily deliveries. Once home refrigeration and cars became common in the 1940s, people could drive to the supermarket to buy and store milk at home, so milkmen were no longer essential.