Which of the following best explains how the interchangeable parts on plows allowed for more cost-effective
machinery?
1. It allowed farmers build their own plows at home rather than carrying one from the store
2. It allowed farmers to see how plows were made, giving farmers a blueprint of how to craft their own
3. It gave farmers a way to easily fix a broken plow should one of the parts break or become worn
4. It made plowing simpler because the plows usually became smaller and more manageable.