The correct answer is the Sphere of Influence.
Spheres of Influence is an international politics which consists of a country dominance over a foreign area or territory.
The China market was always the objective to the US and other countries because of a large number of customers. Japan, Russia, Great Britain, France, and Germany also started to increase their sphere of influence and “divided” the country between them, this way they could control markets with tariffs and transportation. The US