Question

Principles and the Preamble.Topic sentences draw readers’ attention to the main purpose of a piece of writing. It sends the same message as a thesis or claim. Write a topic sentence that is clear and direct.

Answer 1

One possibility for such a topic sentence regarding the Preamble to the Constitution would be: "The Preamble of the Constitution gives a brief yet firm outline of the principles to with witch the Founding Fathers wanted the government to adhere."

Answer 2

Other topic sentence possibilities (in addition to the one that HistoryGuy provided):

With the words, "We the people," the Preamble to the Constitution asserts the principle that authority to organize a government is vested in the people of the country that is to be governed. 
(Consider the theories of John Locke in regard to that principle.  Read more on Brainly.com - brainly.com/question/9913432#readmore .)

The Preamble to the Constitution sets forth these goals as the governing principles of a republic: to establish justice, to insure domestic tranquility, to provide for the common defense, to promote the general welfare, and to secure the blessings of liberty.  
(Your essay then would devote a paragraph of thought to each of those points mentioned by the Preamble.)