Information on the countries that made up the Allied Powers during World War I. The Allied countries in WWI fought against the Central Powers of WWI and were also known as the Entente Powers of WWI. The Allies consisted of many of the countries involved in World War I.

Allies During WWI

Information on the countries that made up the Allied Powers during World War II. The Allies of World War II fought against the Axis Powers of World War II and included many of the countries involved in WWII. 

Allies During WWII

Historic information and profiles of the countries involved in the American Revolutionary War, which could also be considered the countries that helped found the United States, including England, France, and Spain. 

American Revolution Countries Involved

Axis Powers

Countries Involved in World War 1

Countries Involved in World War Two (WWII)

Details of the countries whose space programs have achieved a moon landing. Includes both manned and unmanned moon landings, including the country that has landed on the moon the most.  

Countries That Have Landed on the Moon

List of countries that recognize and acknowledge the Armenian Genocide, which took place in the Ottoman Empire during World War I and wiped out more than 1 million Armenians. 

Countries that Recognize the Armenian Genocide

Details of every country the United States has overthrown, list of countries overthrown by the U.S., list of countries overthrown by the United States.

Countries the US Has Overthrown

D-Day Casualties by Country

Eastern Bloc Countries

Details on the various failed states and fragile states of the world, including the definition of a failed state and the 

Failed States

The Union of Soviet Socialist Republics, also known as the Soviet Union or the USSR, was a vast Eurasian country that existed from 1922 to 1991.

Former USSR Countries

List of Greek city-states. During its earliest years, Greece was not a single country as it is today. Instead, Ancient Greece was comprised of city-states.

Greek City-States

Information about how long countries last, including the oldest countries in the world, the youngest countries in the world, the average age of a country and how long countries usually last. 

How Long Does a Country Last?

How Many Countries has the US Invaded

Details on the last country to abolish slavery, including countries in which slavery still exists and when slavery was abolished in the United States (US). 

Last Country to Abolish Slavery

Data and information regarding countries that remained neutral in World War II rather than allying with either the Axis powers or the Allies.

Neutral Countries in World War II

Oldest Countries

Details and analysis on the oldest country in Europe, Europe's oldest country, and which country is the oldest in Europe.

Oldest Country in Europe

Details of the Papal states, a group of territories located in the Italian peninsula that existed from 756-1870 and was also known as "The State of the Church."

Papal States

Soviet Union Countries

Details of the number of Spanish Flu deaths by country, including number of deaths from Spanish Flu and Spanish Flu fatalities per country. 

Spanish Flu Deaths by Country

Triple Alliance Countries

Triple Entente Countries

Information on the Trucial states, a group of Middle Eastern sheikdoms that were allied with the British Empire from 1820 to 1971 and have since become independent countries. 

Trucial States

Historic list of scenarios in which the United States became involved, either politically, economically, or militarily, in the affairs of another nation. 

United States Involvement in Other Countries

Viking Countries

Which Countries Did Germany Invade During World War 2?

Details of which countries had concentration camps during World War II, as well as the locations of the largest and most extensive concentration camps. 

What Countries Had Concentration Camps? / Countries with Concentration Camps

Details on which countries historically spoke Latin and ways in which Latin is still in use today. 

What Countries Spoke Latin

Details on which countries were involved in the Holocaust, including countries that executed the Holocaust, countries that were victimized during the Holocaust, and countries in which the Holocaust took place. 

History

History

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Country Listing Articles: History