Which of the following would prevent japanese intervention in its neighboring island of the philippines?

the gentlemen’s agreement
the roosevelt corollary
the root-takahira agreement
the treaty of portsmouth
the teller amendment

The correct answer for the given question above would be the first option. The Gentlemen's Agreement is the agreement that would prevent Japanese intervention in its neighboring island of the Philippines. The Gentlemen's Agreement is an agreement that is not written and only supported by the integrity of the counterpart to actually abide by the terms of the agreement. 

Existing to a lot of people