Question

How did the invention of interchangeable parts change society in the 1920s?

Factories became easier to manage, so workplaces were safer.
Cars became easier to produce, and many people lost their jobs.
Cars became less expensive to buy, so people became much more mobile.
Factories became more expensive to operate, and workers were paid less.

Answer 1

"Cars became less expensive to buy, so people became much more mobile."

Explanation: Interchangeable parts made mass production and assembly-line production (e.g., Ford's Model T) practical and efficient, drastically lowering manufacturing costs. That drove down the price of automobiles, expanded car ownership, and transformed daily life—greater personal mobility, suburban growth, tourism, and changes in work and shopping patterns.