Answer:
In the early 1870s, Carnegie co-founded his first steel company, near Pittsburgh. Over the next few decades, he created a steel empire, maximizing profits and minimizing inefficiencies through ownership of factories, raw materials and transportation infrastructure involved in steel making.
Explanation:
Answer:
Communists helped point out American hypocrisy on the issue of civil rights, but fear of communism made many Americans resistant to social change of
Explanation:
Got the answer from course hero and I’m doing it right now
I believe its RADAR.
They had airplanes in world war 1.
Same with machine guns.
And the first repeating rifle was made in 1860.
Which leaves the Radar.
-Steel jelly
