Final answer:
The military-industrial complex refers to the collusion between the munitions industry, the military, and elected officials. Eisenhower expressed concerns about this complex's potential influence on the government and democracy.
Step-by-step explanation:
The military-industrial complex was a term used by President Dwight Eisenhower to describe the collusion between representatives from the munitions industry, the military, and elected officials. Eisenhower expressed concerns about this complex because he believed that it had the potential to exert undue influence on the government and hinder democracy. He worried that defense contractors and military leaders could manipulate policies and decisions for their own gain, rather than acting in the best interest of the country.