The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
The Root-Takahira Agreement was a bargain to keep Japan out of China and the Philippines in return for recognizing Japan's special interest in Korea.
As part of the foreign policy of the United States, the Secretary of State Elihu Root negotiated this agreement with Takahira Kogoro, who was the Japanese Ambassador in America. Signed on November 30, 1908, the agreement included the acceptance that Japan could have the right to fulfill its interest of annex Korea but limit immigration od Japanese people that wanted to live in the Pacific West of the United States.
