The Second Industrial Revolution refers to the period of 1870-1914 wherein gains were made in the production of steel and oil products as well as an explosion in the availability of electricity.
This is in contrast with the First Industrial Revolution which focused on coal, railroads, and textiles.
The Second Industrial Revolution ended with the First World War, where many of the inventions were put to the test and were used to kill.
It helped unify the colonists to fight the war.
B.
The British reacted with anger and made the war more difficult.
C.
It had little importance to the war.
D.
The French decided to support the colonists.
The Declaration of Independence was important to the American Revolution war's effort because....
A. It helped unify the colonists to fight the war.
I hope this helps:)