How does the battle over the Crusader weapons system shown the Iron Triangle in action?

Although the Crusader was supposed to be canceled, United Defense kept a $475-million contract to develope the Crusader’s cannon, while the Army got a new weapons system, and lobbyists who had worked in representation of United Defense´s interest got paid for their achievement.

Explanation:

The Iron Triangle is an interest group formed by United Defense, army contractors, and their allies in the Pentagon and Congress.

The battle over the Crusader weapons system showed how economic interests were capable of influencing the policy process to their benefit.

a.) d-day invasion of normandy.

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d. migration of french settlers into english colonies