Because Eurasia is made of Europe and Asia, which are on the same tectonic plate
Civil rights act of 1965 which was passed by LBJ.
This quote would most likely come out of a textbook that could be related to people who would support social darwinism. For that reason 3. Social Darwinism is the correct answer.
Social Darwinism talks exactly about this type of things where people and whole nations are in the struggle for survival and only the fittest ones will survive in this ongoing struggle.
Answer:
The Patriot victory at Saratoga is often seen as the turning point in the war. Not only did it renew the morale of the American public, but it convinced potential foreign partners, such as France, that American could win the war, and that it might be in their best interests to send aid.