World War I

World War I, or the First World War, lasted from 28 July 1914 to 11 November 1918. It was also called The Great War. It was a big fight between two groups: the Allies and the Central Powers. Fighting happened in Europe, the Middle East, Africa, and the Asia-Pacific regions. The war used new and powerful weapons like tanks, aircraft, artillery, machine guns, and chemical weapons.

The war began after the killing of Franz Ferdinand, who was next in line to rule Austria-Hungary. This happened because a man named Gavrilo Princip, a Bosnian Serb, shot him on 28 June 1914. After this, Austria-Hungary declared war on Serbia. Because of agreements between countries, more nations got pulled into the fight. Russia helped Serbia, which led Germany to declare war on Russia and France. The United Kingdom joined when Germany invaded Belgium. Over time, many more countries joined, including Italy, Bulgaria, Romania, Greece, and the United States in 1917.

The war caused many deaths and injuries, both among soldiers and civilians. It also led to the Spanish flu pandemic because so many people were moving around. On the Western Front, soldiers fought from trenches, and big battles like Verdun, the Somme, and Passchendaele did not change the situation much. In 1918, Germany tried to win in the spring, but they were defeated by the Allied Hundred Days Offensive. The war ended with the Armistice of 11 November 1918.

The Paris Peace Conference of 1919–1920 made new agreements, including the Treaty of Versailles. This treaty made Germany give up land, stop having a big army, and pay for damages. The war ended some old empires and helped create new countries such as Poland, Finland, the Baltic states, Czechoslovakia, and Yugoslavia. The League of Nations was created to help keep peace, but its problems later helped start World War II in 1939.

Names

Before World War II, people called the war from 1914 to 1918 the Great War or just the World War. At that time, some thought it might be the last big war. The name First World War was first used in September 1914 by a German scientist.

Background

Main article: Causes of World War I

For much of the 1800s, European countries worked to stay peaceful by balancing power. But changes, like Germany growing stronger and the Ottoman Empire getting weaker, caused new problems. Countries joined together in groups to feel safer. Germany and Austria-Hungary formed the Triple Alliance, and France, Russia, and Britain made the Triple Entente. These groups set the stage for possible fights.

Germany's economy grew fast, leading to a race to build more weapons, especially ships with Britain. This race, plus troubles in the Balkans, made war more likely. The Balkans were a place where many countries wanted to be in charge, and fights there made nations more upset and uneasy about a bigger war happening.

Prelude

For a chronological guide, see Timeline of World War I.

Sarajevo assassination

Main article: Assassination of Archduke Franz Ferdinand

On 28 June 1914, Archduke Franz Ferdinand of Austria, who was next in line to become emperor, was visiting Sarajevo, the capital of Bosnia and Herzegovina. A group of young men from a movement called Young Bosnia tried to stop him because they wanted Bosnia to be free. One of them, Gavrilo Princip, shot and killed the Archduke and his wife, Sophie.

Expansion of violence in Bosnia and Herzegovina

After the shooting, some people in Sarajevo became very angry and caused trouble. There were also problems for people from a group called Serbs in other cities.

July Crisis

Main article: July Crisis

See also: German entry into World War I, Austro-Hungarian entry into World War I, and Russian entry into World War I

The killing of the Archduke started something called the July Crisis. Austria wanted to stop another country, Serbia, from interfering in Bosnia. They made very hard demands on Serbia, hoping this would lead to fighting. When Serbia did not agree, Austria declared war on Serbia. Russia began to prepare its army to support Serbia. Germany also started preparing its army. Soon, many countries were involved, and World War I had begun.

Progress of the war

Further information: Diplomatic history of World War I

World War I, also called The Great War, was a big fight between two groups: the Allies and the Central Powers. The war lasted from 28 July 1914 to 11 November 1918. It took place in Europe, the Middle East, parts of Africa, and the Asia-Pacific.

The war brought new kinds of weapons, like tanks, airplanes, big guns, and machine guns. It started after the killing of Archduke Franz Ferdinand of Austria. Soon, many countries joined in because of their alliances. Important battles happened in places like Serbia, Belgium, and France. There was also fighting in the Balkans, the Ottoman Empire, and Italy. When the United States joined in 1917, it helped change the war. In the last years, big attacks led to the Central Powers giving up, and the war ended with agreements.

Aftermath

Main article: Aftermath of World War I

After World War I ended, big changes happened across Europe. The German, Austro-Hungarian, Ottoman, and Russian empires all disappeared, and many new countries were created. Some families that had ruled for a long time lost their power. Belgium, Serbia, and France were badly damaged.

The war officially ended with several treaties. The most famous one was the Treaty of Versailles, signed in 1919, which placed many rules on Germany. This treaty created the League of Nations to help keep peace in the future. Different countries signed their own peace treaties to officially end the war.

Casualties

Further information: Spanish flu

World War I was a very big war with many sad events. Many people died, both soldiers and ordinary people. The war also brought new weapons like tanks and airplanes.

The war caused diseases, like a serious flu called the Spanish flu, which spread around the world. Soldiers faced very hard conditions, and some were taken as prisoners. Most prisoners survived in special camps.

Soldiers' experiences

During World War I, many soldiers from all sides fought in the war. Some who survived found it hard to talk about their time in the war. They often formed groups to share their stories with other veterans.

Many countries used conscription, which is when people were forced to join the military. This was very controversial in places like Ireland, Australia, and Canada. In the United States, conscription began in 1917 because not enough people were volunteering to fight.

Main articles: List of military attachés in World War I and List of military attachés and war correspondents in World War I

Economic effects

Main articles: Economic history of World War I and Post–World War I recession

Further information: Home front during World War I and Financial crisis of 1914

World War I changed economies in many countries. With many men going to war, women entered the workforce for the first time in large numbers. This helped later efforts for voting rights for women. Governments took on bigger roles in their economies. In places like Germany and France, their share of the total wealth rose above 50%.

Countries borrowed a lot to pay for the war. Britain sold investments in the United States and borrowed from Wall Street. After the war, the U.S. asked for its loans to be repaid. This created financial challenges for many nations. The Great Depression later made it even harder to pay back these debts.

Support and opposition for the war

Further information: Propaganda in World War I, British propaganda during World War I, and Propaganda and censorship in Italy during the First World War

Many people and groups supported World War I for different reasons. In the Balkans, Yugoslav nationalists wanted to be free from Austria-Hungary and hoped to create an independent country called Yugoslavia. In the Middle East, Arab nationalism grew, which led to the Arab Revolt against Ottoman rule. Some socialist groups at first supported the war, but later disagreed about it.

There was also opposition to the war. Some people were punished for speaking out against it, including Eugene Debs in the US and Bertrand Russell in Britain. In Ireland, some Irish nationalists did not want to join the war, which added to tensions and led to events like the Easter Rising in 1916. Others, called conscientious objectors, refused to fight because of their personal or religious beliefs and faced serious consequences.

Technology

World War I saw many new technologies used in battle. Armies used telephones, wireless communication, armoured cars, tanks like the Little Willie, and aircraft. Poison gas was used, but it did not win the war.

Artillery changed during the war. At first, cannons were placed close to the front lines. Later, indirect fire techniques were used, with help from aircraft and field telephones. Fixed-wing aircraft were first used for spotting the enemy and attacking from the ground. To fight these planes, anti-aircraft guns and fighter aircraft were developed. Strategic bombers were created by both the Germans and British, and aircraft carriers were used in combat for the first time.

Diplomacy

Main article: Diplomatic history of World War I

During World War I, countries used diplomacy and propaganda to get support or weaken their enemies. They did this in several ways. They ran propaganda campaigns. They changed their war goals as the war went on. They tried to bring in neutral countries like Italy, the Ottoman Empire, Bulgaria, and Romania by promising them land. They also helped groups inside enemy countries who wanted to be independent. There were many peace offers from neutral countries or from one side to the other, but none of these helped end the war.

Legacy and memory

Main articles: List of last surviving World War I veterans, Commonwealth War Graves Commission, and American Battle Monuments Commission

Memorials were built in many villages and towns to honor those who served and died in the war. Organizations like the Commonwealth War Graves Commission and the American Battle Monuments Commission helped move soldiers buried near battlefields to formal graveyards and built monuments to those who were missing. The poem In Flanders Fields by John McCrae is still remembered today, especially on special days of remembrance.

Historians continue to study World War I to understand its causes and effects. The war was different from later conflicts because it didn’t have clear heroes or villains, making it challenging to teach. Today, scholars explore many new ideas about the war and its impact on politics, society, and everyday life.