In the 17th-18th century the ammount of slaves depleted, so this would be true
Answer:
B. electricity
Explanation:
The concept of Electricity already been discovered in 1752. The technologies for mass production started to emerged during industrial revolution in 1760. At that time, most of them use coal as source of energy rather than Electricity.
<u>- Cotton gin</u>
This invention allowed mass production of cotton for the textile industry.
<u>- The production Line</u>
Initially, this invention was made to mass produce vehicles.
<u>- Bessemer Steel process</u>
This invention was made to mass produce steel from molten pig iron
I believe that the answer is b, I hope this helps
