People are saying by 2050, it will happen. There are already 41 million Spanish speakers in the U.S. 321.4 Million Beings in the U.S itself. So, if you do the math, we have 12.76% of the U.S population being Spanish speakers. By the rates, I don't think its gonna happen by 2050, so maybe around 2075 - 2100 (Unless there is a serious exponential growth.
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.
Due to the Articles of Confederation, States could override what Congress had established and create their own laws which caused division between the states and caused many issues on currency and of other sorts of important matters. Thus, enabling no authority of control over the power of the differentiating states.