Answer: it contributed the use of new basic materials, chiefly iron and steel, (2) the use of new energy sources, including both fuels and motive power, such as coal, the steam engine, electricity, petroleum, and the internal-combustion engine
Explanation:
Yes i think so hope this helped
Option C. You need to always check ahead before going. There’s no need to check the vehicle behind you as it will be waiting for you to go off and waiting for 5 seconds will just be inviting the horns of irritated Drivers
Thhe answer is your last option "led to decline in racist attitudes towards African American and imigrants"