Which of the following individuals was known as a key author of early American government documents?

The correct answer is that all the individuals listed played significant roles as key authors of early American government documents. Each contributed to foundational texts that helped shape the governance of the United States.

James Madison is often referred to as the "Father of the Constitution" for his pivotal role in drafting and promoting the U.S. Constitution and the Bill of Rights. His contributions laid the groundwork for the structure and function of American government.

Alexander Hamilton was an influential advocate for a strong federal government and is best known for his role in writing the Federalist Papers, a series of essays that argued for the ratification of the Constitution. These papers provided critical insights into the principles behind the Constitution and the rationale for its implementation.

John Jay also contributed to the Federalist Papers and played a vital role in early diplomatic efforts, including negotiating the Treaty of Paris, which ended the American Revolutionary War. His contributions alongside Madison and Hamilton provided a strong intellectual foundation for the nation's governance.

Because each of these individuals significantly influenced the formation of early government documents, the collective answer accurately includes all three as key authors.