The Constitution was written in the summer of 1787 in Philadelphia, Pennsylvania, by delegates from 12 states, in order to replace the Articles of Confederation with a new form of government. It created a federal system with a national government composed of 3 separated powers, and included both reserved and concurrent powers of states.

The first 10 amendments to the Constitution make up the Bill of Rights. James Madison wrote the amendments, which list specific prohibitions on governmental power, in response to calls from several states for greater constitutional protection for individual liberties.

The Constitution gives the power of declaring war solely to Congress, while the president serves as commander in chief of the U.S. military. What does commander in chief mean? As American citizens, it is our responsibility not only to stay informed about the domestic and international uses of our military, but also to make thoughtful judgments about the wisdom and prudence of each use.

This is an introductory essay from Presidents and the Constitution.

The “Great Writ” or habeas corpus has been an essential civil liberty guaranteed since Magna Carta. In listing powers denied to Congress, the Constitution notes that “The privilege of the writ of habeas corpus shall not be suspended, unless when in cases of rebellion or invasion the public safety may require it.” In 1861, Abraham Lincoln invoked this power of Congress—which was not in session—to suspend habeas corpus in certain areas. The next year, as he believed the civil justice system was inadequate to deal with the rebellion, he expanded the suspension throughout the United States and established military tribunals to try citizens charged with disloyalty. In this lesson, students explore Lincoln’s suspension of habeas corpus and constitutional issues surrounding it.