Answer: Neta Crawford, chair of the political science department at Boston University, in her Costs of War project, estimated the long term cost of the Iraq War for the United States at $1.922 trillion.
All of the following played a role in the Great Depression except "<span>B. an under production of goods and services," since this a result of the Great Depression, not a cause. </span>
Violating the Supremacy cause. This is a clause that is present in paragraph 2 of Article VI of the constitution of the US.
Hope this helps :)
Would you mark brainiest please, I am trying to get more points :)
