Who is the man that produced metal/steel in the man who built America.

Andrew Carnegie (/kɑːrˈneɪɡi/ kar-NAY-gie, November 25, 1835 – August 11, 1919) was a Scottish-American industrialist and philanthropist. Carnegie led the expansion of the American steel industry in the late 19th century and became one of the richest Americans in history.

Explanation:

answer; the period of time known as the middle ages;

an interest group is an organization whose members share common concerns, and try to influence government policies that impact those concerns. elected officials frequently complain about the influence of "special interests" on american politics.