The scene of the signing of the United States Constitution on September 17, 1787 at the Constitution Convention in Independence Hall in Philadelphia. Christy created the painting in 1940 and it is currently displayed in the east stairway in the House of Representative's wing in the Capitol building. Click here for an interactive tour and further information about the painting.

(1751 - 1836) One of the founding fathers, the principle author of the United States Constitution, a co-author of the Federalists Papers, and the 4th president of the United States.

(1469 - 1527) An Italian diplomat and political philosopher, known for his treatises on the realist political theory in The Prince and republicanism in Discourses on Livy.

(1712 - 1778) A citizen of Geneva, a political philosopher who influenced the French Revolution, the development of the liberal and socialist theories, and nationalism.

The United States Presidential Memorial built to honor the 16th president of the United States, Abraham Lincoln (1809 - 1865). The memorial is located in the National Mall in Washington, D.C.

The monument was built in 1977 and set in the Marx-Engels-Forum, a public park in the middle of Berlin, which was named after Karl Marx (1818 - 1883) and Friedrich Engels (1820 - 1895), the authors of The Communist Manifesto and the founders of modern socialism.

The official home and principle workplace of the President of the United States of America, located at 1600 Pennsylvania Avenue, Washington, D.C. It was built in 1792 and 1800 and has been the residence of every U.S. President since John Adams.

The seat of government for the United States Congress. It is located at the top of Capitol Hill at the end of the National Mall in Washington, D.C. George Washington laid the first cornerstone in a groundbreaking ceremony in 1793.

The seat of the Supreme Court of the United States of America, located at One First Street, Northeast, one block east of the United States Capitol. At the laying of the cornerstone in 1932, Chief Justice Charles Evans Hughes stated, "The Republic endures and this is the symbol of its faith."

Above the motto "Equal Justice Under Law" are a group of nine figures, sculpted by Robert Aitken, representing Liberty Enthroned guarded by Order and Authority.

Located near Keystone, South Dakota, it is a United States Presidential Memorial which represents the first 150 years of history for the U.S. It consists of 60 foot granite sculptures of the heads of President George Washington, President Thomas Jefferson, President Theodore Roosevelt, and President Abraham Lincoln. The construction of the memorial took place between 1927 and 1941.

Located on Cemetery Hill in Gettysburg, Pennsylvania. The cemetery was dedicated in 1863 for the fallen union soldiers in the American Civil War. Abraham Lincoln gave his famous Gettysburg Address at the dedication ceremony.

The Tomb of the Unknowns (Official Name) stands on top of a hill in Arlington National Cemetery, Arlington, Virginia, overlooking Washington, D.C. It has been guarded by the U.S. military 24/7 since July 2, 1937.

The attack was a surprise attack on the United States naval base at Pearl Harbor, Hawaii by the Japanese Navy, December 7, 1941. The picture is of the USS Shaw exploding after her forward magazine was detonated.

A U.S. Marine Corp War Memorial located near Arlington National Cemetery in Arlington, Virginia. It is dedicated to all the personnel of the United States Marine Corp who have been killed defending their country since 1775. It was dedicated by President Dwight D. Eisenhower in 1954. The statue is based on the famous photo taken in 1945 of U.S. soldiers raising the U.S. flag atop Mount Suribachi during the Battle of Iwo Jima during World War II.

American cemetery and memorial located in Colleville-sur-Mer, Normandy, France established in 1945 to honor the American soldiers who died in Europe during World War II. It overlooks the cliffs of Omaha Beach, one of the landing sites of the Normandy Invasion (D-Day), June 6, 1944.

The United Nations is an international organization whose goal is to promote cooperation in international law, international security, economic development, social progress, and human rights. It was founded in 1945 and is headquartered in New York City.

Occurred in North and South Vietnam between 1959 and 1975. The war was fought between communist North Vietnam and the United States who supported South Vietnam. The U.S. withdrew under the terms of the Paris Peace Accord of 1973.

The EU is a political and economic community made up of twenty-seven member states. The members of the European Parliament are directly elected from each member state.

On September 11, 2001, members of the terrorist group, al-Qaeda hijacked American Airlines Flight 11 and United Airlines Flight 175 and intentionally crashed the planes into the twin towers of the World Trade Center in New York City resulting in their collapse. The same morning, hijackers crashed American Airlines Flight 77 into the Pentagon. United Airlines Flight 93 had also been hijacked with an intended flight path toward Washington, D.C. However, the flight crew and passengers attempted to retake the plane, which resulted in its crash in a field in Pennsylvania. The terrorists attack caused the death of 2,998 people from over 80 different countries.

Following the September 11, 2001 attacks, the United States, along with several other countries, initiated a campaign to "curb the spread of terrorism". In October 2001, NATO invaded Afghanistan to remove the al-Qaeda forces and oust the Taliban regime.

In response to the 9/11 attacks, President George W. Bush announced the establishment of the Office of Homeland Security in an effort to secure the United States from terrorism. Homeland Security Appropriations Acts have been signed in 2003, 2004, and 2005 designating several billion dollars toward improving the U.S. security system.

Two beams of light represent the Twin Towers of the World Trade Center during the 2004 Memorial of the September 11, 2001attacks.

The fifty stars on the flag represent the fifty states and the 13 stripes represent the 13 original colonies that rebelled against the British Crown. According to the book called Our Flag, published in 1989 by the House of Representatives, the " White signifies purity and innocence, Red, hardiness & valour, and Blue, the color of the Chief (the broad band above the stripes) signifies vigilance, perseverance & justice." From the 1977 book about the flag published by the House of Representatives, "The star is a symbol of the heavens and the divine goal to which man has aspired from time immemorial; the stripe is symbolic of the rays of light emanating from the sun."