In 1781 the Revolutionary war had started
Answer:
Gibbons v. Ogden, 22 U.S. 1, was a landmark decision in which the Supreme Court of the United States held that the power to regulate interstate commerce, granted to Congress by the Commerce Clause of the United States Constitution, encompassed the power to regulate navigation.
Explanation:
the first and last choice are conservative and the two middle choices are liberal
In an explanatory essay, or any essay, the introductory paragraph introduces (hence it's name) the main idea, or what you are going to explain. The body paragraphs go into extreme detail of what the introductory paragraphs mentioned.