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.
Most importantly, Roosevelt announced his vision for the world, "a world attainable in our own time and generation," and founded upon four essential human freedoms: freedom of speech and expression, freedom of worship, freedom from want, and freedom from fear.
The answer is A. The Bronze Age was when all used bronze as a main resource