How did the robber barons control their industries

A robber baron is a nineteenth century businessman who used any (questionable) practice to get their wealth. They The practice they used is called monopoly. Monopoly is a market situation where producer(s) controls the supply of good or service and where the entry of new producers are greatly restricted or even prevented.

Explanation:

the answer is b.2008 and 2012 were presidential election years.

a)scientists

explanation:

the national defense education act had two main goals. the first one was to provide personal that was oriented to defense, including scholars, engineering students and so on. the other goal was to provide financial assistance for the students who would be enrolling at colleges and universities in the 1960s.