Carnegie invested in the Frick Coke Company because the Frick Coke Company is his main supplier of coke coal.
He was the governor of new York
Europe and was victorious for more than two years by relying on a new military tactic called the "Blitzkrieg" (lightning war). Blitzkrieg tactics required the concentration of offensive weapons (such as tanks, planes, and artillery) along a narrow front.
Explanation:
The British did all of the following things mentioned in the question above.