Final answer:
Andrew Carnegie is the "Captain of Industry" most associated with the steel industry.
Step-by-step explanation:
The "Captain of Industry" most associated with the steel industry is Andrew Carnegie. Carnegie was a Scottish-American industrialist who built a massive steel empire in the late 19th century. He revolutionized the steel industry by implementing new production methods and vertical integration, ultimately creating the Carnegie Steel Company.
Learn more about Andrew Carnegie and the steel industry