Answer:
Pool
Explanation:
Given that pool is a term in business that is used to describe a form of the agreement made by the members of the pool with the fundamental purpose of retaining powerful control over prices. It involves producers of similar products that wish to standardize the product prizes.
Hence, in this case, a POOL is a group of businesses that make an informal agreement to cooperate in controlling a market or industry.
Because he sees Japanese as disease from the outside but the communist is a disease from the inside and need to destroy before becoming an unstoppable force. Also the communist is a blocking of his plan to unify China in one flag to defeat the Japanese forces in the country.