Final answer:
Zippers were more popular during the Great Depression because they were cheaper and more efficient than buttons. They provided an affordable and durable clothing option during a time of economic hardship.
Step-by-step explanation:
Zippers were more popular during the Great Depression because they were cheaper and more efficient than buttons. During this time of economic hardship, people were looking for affordable and durable clothing options, and zippers provided that. Additionally, zippers were easier to use and required less time to fasten compared to buttons. As a result, zippers became a popular choice for both manufacturers and consumers.