The answer to your question is B. However the troops were eventually withdrawn from Vietnam due to disagreements from the American people.
I believe the correct answer would be A. It is unequal distribution of resources that is not a major factor that would lead to genocide. Genocide is the intentional killing of a group of people. It would be a result due to instability in terms of political and social factors.
Answer:A..Modern Science?
Explanation:Modern Scientific Origin Story: The Big Bang. From vast nothingness to a Universe of stars and galaxies and our own Earth. ... Since that moment 13.8 billion years ago, the Universe has been expanding — and cooling down as it gets bigger. Gradually energy cooled enough to become matter.
It was a new way to solve problems and do research.