1. which resources played crucial roles in industrialization? 2. how did edwin drake industry to acquire larger quantities of oil? 3. how did the bessemer process allow better use of iron ore? 4. what new uses for steel were developed at this time? factor 2; advancements in technology 5. how did thomas edison contribute? 6. how did george westinghouse contribute? 7. how did christopher sholes contribute? 8. how did alexander bell contribute? factor 3; expanding urban population 9. where did this expanding population come from? 10. what two key elements did this population provide?