The answer to this question is B. Hope this helps!!!
According to a 2013 Index of Economic Freedom, the United States, Canada, Denmark, the United Kingdom, Hong Kong and Mauritius have a market economy. Most market economies have a degree of state-dictated planning and are thus categorized as mixed economies.
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Answer:Sinking of American merchant ships
Explanation:In early 1917 Berlin forced the issue. Its declared decision on 31 January 1917 to target neutral shipping in a designated war-zone became the immediate cause of the entry of the United States into the war.
I think it is to help the president make certain decision and if he/she dies they take over