9 power treaty is...
a treaty resulting from the Washington Armaments conference. It pledged the signers to support the principle of Open Door Policy which enable all nations to compete for trade and investment opportunities in China on equal footing rather than allow individual nations to create economic monopolies in particular regions. The nine countries were: US, Britain, France, Japan, Italy, China, Belgium, Portugal, and the Netherlands
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D) to spread democracy throughout the United States
