The answer is. <span>A)It prevented European countries from taking advantage of China's resources. At that time, China was in a dire state following their war with the Japanese. The open-door policy created by John Hay's was established to make United States able to maintain equal footing to obtain trading relationships with China so it's not fully controlled by the European nations.</span>
The primary reason that Britain, France, and Russia formed a Triple Entente was "to respond to Germany's imperialism" which was born primarily from nationalism.
Britain gave out the proclamation of 1763 which banned colonists from going west to the Appalachian mountains and into the Indian territory because Britain did not want to start another costly war
