Why would the existence of spheres of influence threaten the united states’ goals in china? check all of the boxes that apply. the chinese government was too strong for the united states to influence. the united states would have trouble trading with china if other countries controlled chinese trade. the united states would have little influence if china was already divided into areas of foreign control. china was too busy fighting european nations to trade with the united states.

Explanation:

The Open Door policy aimed at assuring the United States had equal access to trade in China.The policy reasserted earlier agreements that all countries should have equal access to ports in China, with no favoured "spheres of influence" for one nation or another.  The United States was seeking to maintain an equal footing with other nations in the access to trade in China.  

a peace conference held after the surrender of japan

an international conference held near the end of world war ii

a meeting of the victorious nations after the defeat of germany

a summit meeting between the united states and the soviet union

i also think he is correct. i believe they came to washington to protest their rights.