Answer : Option A) The Bessemer process increased the use of steel in many industries.
Option C) Electricity meant that larger and more sophisticated manufacturing machines could be developed.
Explanation : The impact of technologies to the gilded age which was from 1870 to 1900
where the first point applicable is;
i) The Bessemer process increased the use of steel in many industries. The Bessemer process which had been discovered in the 1850's actually brought the special cutting-edge solutions to the production of steel which had a fruitful impact on industries.
ii) Electricity meant that larger and more sophisticated manufacturing machines could be developed. The process of mass production using electricity evolved even more and helped development of new technologies.
It's a because during the middle ages kingdoms conquer other nations by the numbers as soon as the child has education he (I say he because they didn't allow women to have education back then) he will enlist into one of the European nations and fight.
The Middle Colonies were dependent on cash crops.
C. His purpose for the fourteen points speech