Abrief declarative sentence that expresses the focus of your paper is a

A thesis statement

Explanation:

A thesis statement is a sentence in which you let the reader know the significance of the topic being talked about. It also work as a road map. Many say that the thesis statement is an umbrella in which all of the essay must fit under. You're going to prove and argument in order for your thesis statement to make sense and to be proved correct.

that’s the kind of bug henry was; and if we’d a had him along ’stead of our kings, he’d a fooled that town a heap worse than ourn done.”