Answer:
A The military leaders freed the slaves that worked in the mine
The United States advocated for the creation of the Kellogg-Briand Pact because they wanted to outlaw war. They hoped that the signatories will ensure that there will be no causes of war and there will be a peaceful relationship among the nations.
The United States don't want to engage in another World War after it has experienced the losses that World War I brought them as a nation.
He would claim that it was proof of superiority. Social Darwinism is an idea that people or countries who succeed in life and who become rich did so because they could adapt to the environment and that those who are poor are inferior to them because they couldn't. In country leading, the idea is that the countries that became wealthy were superior and thus easily became rich while poor countries are inferior in their opinions.