The treaty was an outcome of the U.S.-Japan tie-up for invasion of Korea.

In the 19th century, the U.S. chose Japan as an "ally" in its Asia-Pacific strategy, after suffering a series of defeats in its attempts to invade Korea.

After the 1868 Meiji Restoration, Japan had sought to conquer Korea under the "theory of the conquest of Korea". And it found commonness with the U.S. in their interests.

In July 1905, the U.S. secretary of the Army, Taft, and Japanese Prime Minister Katsura had secret talks in Japan to conclude an agreement confirming the security of each other's colony.

In the agreement concluded in the form of exchange of secret memoranda the U.S. recognizes Japan's suzerainty on Korea, the suzerainty that forbids Korea from concluding any agreement with foreign countries without Japan's consent, in return for Tokyo's pledge not to intervene in the U.S. control of the Philippines.

This criminal treaty paved a way for Japan to put Korea under its colony for 40 years.

The Korean people will surely make the U.S. and Japan pay for their past wrongdoings.