I'm not sure 100% what exactly this question is asking, but I know World War 1 was the first war to include Gas masks and Chemical warfare, so that is more than likely the answer.
US combat general lead allies to victory in the invasion of sicily
He includes references to the Deceleration of Independence and the Constitution. King said <span>“the unalienable rights of life, liberty, and the pursuit of happiness" which is out of the Declaration of Independence.</span><span />
Answer:
Transportation and the ability for factories to be located anywhere
Explanation:
The steam engine allowed for people to travel farther faster and well as gave factories the ability to be located anywhere and not near the source of water to get supplies.
