4) The United States shall guarantee to every State in this Union a Republican Form of Government, and shall protect each of them against Invasion; and on Application of the Legislature, or of the Executive (when the Legislature cannot be convened) against domestic Violence.
5) Article Five of the United States Constitution describes the process whereby the Constitution, the nation's frame of government, may be altered
6) Article 6 of the U.S. Constitution first says that any debts or engagements that the country was involved in before the Constitution was put into action are still valid.
