Question

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.
What is Jefferson saying here in the introduction?

Answer 1

In these lines, Thomas Jefferson gives us a brief peak of what the document is about. The overall idea of this introduction is to affirm that when a group of people (The Thirteen American Colonies) finds necessary, or decides, to split off from a nation (Great Britain), it is the duty of that group of people to tell the world the causes of that separation, and with this words, Jefferson also aims to introduce the causes of that separation or independence.

Answer 2

He urges Peace to respect the authorities