Geography
Conflicts
International Institutions
U.S. Presidents
100

This Russian exclave became part of the Soviet Union under the Potsdam Agreement in 1945

Kaliningrad

100

Napalm was first used in this 20th century conflict

World War II

100

The 1997 Convention on the Prohibition of the Use, Stockpiling, Production and Transfer of Anti-Personnel Mines and on their Destruction is more commonly known as a convention named after this Canadian city where it was signed.

Ottawa

100

This is the only person to serve as president without winning an election for president or vice president

Gerald Ford

200

These two countries are the only two landlocked countries in South America

Bolivia, Paraguay

200

This 1980-1988 war in the Middle East saw the first widespread use of chemical weapons since World War 1

Iran-Iraq War

200

This former First Lady served as the first U.S. Representative to the United Nations Commission on Human Rights

Eleanor Roosevelt

200

In 1951, President Truman relieved this popular American military leader of command in Korea for his frequent and public criticism of Truman

Douglas MacArthur

300

These are France's two overseas territories in the Pacific

New Caledonia, French Polynesia

300

This Prussian military theorist based his famed work of military science on his experience in the Napoleonic Wars, most notably at the Battle of Borodino 

Carl von Clausewitz
300

The African Union is headquartered in this African city

Addis Ababa

300

At 78 years old, Joe Biden was the oldest president on his inauguration day. At just 42 years old, this president was the youngest

Theodore Roosevelt

400

This river forms the majority of the border between North Korea and China

Yalu River

400
During World War II, U.S. forces held out on this island in Manila Bay before surrendering to Japanese forces on May 6, 1942, marking the end of the U.S. defense in the Philippines
Corregidor Island
400

The Bretton Woods Conference established the International Monetary Fund and this financial institution known by the acronym of IBRD

International Bank for Reconstruction and Development

400

Four presidents have won the Nobel Peace Prize. This is the only president to receive the prize for his actions after leaving office

Jimmy Carter

500

This is the only country in Africa that still recognizes Taiwan over the PRC

Eswatini

500

During the Land Cruiser War (2003-2020), Sudanese forces carried out a widespread ethnic cleansing campaign against Sudan's non-Arab population in this region

Darfur

500

As of July 2024, this country was the largest contributor of personnel to UN peacekeeping missions

Nepal

500

This is the last U.S. president to come from the Whig Party

Millard Fillmore