What very controversial political ideal was put out in what was known as "the declaration" and how did ideal define the role of the races in Southern Society ? Please help me ASAP it’s so tonight

When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.