Racism is the denomination of discrimination and prejudice (directly or indirectly) against individuals or groups because of their ethnicity or color. It is important to emphasize that prejudice is a form of concept or judgment formulated without any prior knowledge of the subject matter, while discrimination is the act of separating, excluding or differentiating persons or objects.
It was the the Mexican-American War that brought about the need or desire to begin an expansionist policy with regard to foreign affairs, since the end of this war ceded a lot of new territory that was used by settlers moving west.
