Answer:
The Open Door policy was a statement of principles initiated by the United States in 1899 and 1900. It called for protection of equal privileges for all countries trading with China and for the support of Chinese territorial and administrative integrity. The statement was issued in the form of two circulars (diplomatic notes), dispatched by U.S. Secretary of State John Hay to Great Britain, Germany, France, Italy, Japan, and Russia. The Open Door policy was a cornerstone of American foreign policy in East Asia until the mid-20th century.
Explanation:
Some retaliated by protesting with pitchforks and fire<span />
The answer to this question is A. Concurrent
The answer to the second question is B. Federal
The answer to the last one is D. Declaring war
D was the romans way of thinking in the matter and thus the anwser
