Which statement about the Open Door Notes is true? A. All the European powers agreed to them.
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B. All the European powers rejected them.
C. They caused war with Japan.
D. Nations that received them did not fully accept them.

C. They caused war with Japan.

Explanation:

The government of the United States devised the open-door policy after the Spanish-American War. It was a policy of free trade towards the Far East. Many countries have agreed with the principles of the Open Door policy. Yet in 1915, Japan began to create certain problems because of its militant ideas in that part of the world. In such circumstances, war breaks out between China and Japan. The United States imposed an embargo on Japan for violating the terms of the treaty. Many historians believe that Japan, therefore, turned against the United States during World War II.