I believe the answer is B. <span>B. They invented tools using stones and metal </span>
Answer:
The induction motor is one of the most important inventions in modern history. It turned the wheels of progress at a new speed and officially kicked off the second industrial revolution by drastically improving energy generation efficiency and making the long-distance distribution of electricity possible.
Explanation:
Idk sorry buddy ,nihy hjbbhjhgjj, hb
<span>It contributed to the desire of secession by many of the southern states</span>
Because that is the lower class.
