The White Man's Burden is a poem by Rudyard Kipling. Although the poem has deeper meanings, a direct reading was popularized from the dominant points of view at the time, justifying as a noble enterprise, an ungrateful and altruistic obligatio, the domain of " white man" on those defined as "inferior races".
Apparently, in a superficial reading, the subject is a rhetorical mandate to the white man to colonize the other races for the benefit of them, being their "burden" both the task and the people themselves to colonize. Because of this issue, as well as the resounding title, it soon became an emblem of colonial rule and white supremacists.
Answer: America had placed an embargo on Japan due to their over achieving power and took over most of the South Pacific islands. Japan was wanting to upward/increase its oil for its war effort and saw the Pacific Fleet of the United States as its biggest threat.
They hoped to gain wealth and land