"World War I (28 July 1914 – 11 November 1918)..."
A global war originating in Europe that lasted from 1914 to 1918 and involved most of the world's great powers, characterized by new forms of warfare, such as trench warfare and chemical warfare.
Causes of World War I: The complex web of political, economic, and social factors that led to the outbreak of World War I, including nationalism, imperialism, alliances, and militarism.
Assassination of Archduke Franz Ferdinand: The assassination of the heir to the Austro-Hungarian throne in Sarajevo, Bosnia, by a Serbian nationalist was the spark that ignited World War I.
Schlieffen Plan: German military strategy for a swift conquest of France through a rapid mobilization that would avoid a two-front war.
Trench warfare: The primary form of combat in World War I, characterized by dug-in positions and long, bloody sieges.
Western Front: The line of trenches that stretched from the English Channel to Switzerland, where some of the deadliest battles of World War I were fought.
Eastern Front: The theater of war on the Eastern front between Germany and Austria-Hungary against Russia.
Unrestricted submarine warfare: Germany's tactic of attacking any and all shipping vessels, including neutral ships, which contributed to U.S. entry into the war.
Total war: The concept of involving entire populations and industries in support of the war effort, which emerged during World War I.
Russian Revolution: A political revolution in Russia that was caused in part by the country's involvement in World War I and led to the establishment of the Soviet Union.
U.S. entry into the war: The U.S. entered the war in 1917 after Germany resumed unrestricted submarine warfare and intercepted the Zimmermann Telegram calling for Mexico's support against the U.S.
War on the homefront: The impact of the war on daily life, including rationing, propaganda, women's roles, and civil liberties.
Treaty of Versailles: The peace treaty that officially ended World War I, which imposed heavy penalties on Germany and redrew the borders of Europe.
League of Nations: The international organization created after World War I to promote peace and prevent future wars, ultimately unsuccessful.
Interwar period: The time period between the two World Wars, which saw a rise in nationalism, fascism, and totalitarianism.
Legacy of World War I: The impact of World War I on the world and the emergence of the “Lost Generation,” a disillusioned group of writers and intellectuals, who struggled to come to terms with the horrors of the war.
European Theater: This refers to the primary area of conflict in World War I, which includes Western, Eastern, and Italian Fronts in Europe.
Middle Eastern Theater: This refers to the conflicts that took place in the Middle East and Arabian Peninsula, including the Gallipoli Campaign, the Arab Revolt, and the Mesopotamia Campaign.
African Theater: This refers to the conflicts that took place in Africa, including the East African Campaign, the South African Campaign, and the West African Campaign.
Pacific Theater: This refers to the conflicts that took place in the Pacific Ocean and Asia, including the Siege of Tsingtao and the Battle of Jiaozhou Bay.
Trench Warfare: This refers to the tactics that were used in the European Theater of World War I, which involved digging trenches and using them as defensive positions.
Naval Warfare: This refers to the conflicts that took place on the high seas, including the Battle of Jutland and the sinking of the Lusitania.
Chemical Warfare: This refers to the use of poisonous gases, such as mustard gas, chlorine gas, and phosgene gas, which were used by both sides in the war.
Air Warfare: This refers to the use of aircraft in combat, including reconnaissance, bombing, and dogfighting.
War of Attrition: This refers to the strategic objective of wearing down the enemy's resources and will to fight, rather than achieving decisive victories.
"...two coalitions, the Allied Powers and the Central Powers."
"Fighting took place throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia."
"...when a Bosnian Serb named Gavrilo Princip assassinated Archduke Franz Ferdinand, heir to the Austro-Hungarian throne."
"Austria-Hungary held Serbia responsible, and declared war on 28 July."
"...Russia came to Serbia's defence, and by 4 August, Germany, France and Britain were drawn into the war..."
"German strategy in 1914 was to first defeat France then transfer forces to the Russian front."
"...the Western Front consisted of a continuous line of trenches stretching from the English Channel to Switzerland."
"...neither side could gain a decisive advantage..."
"In early 1917, the United States entered the war on the side of the Allies..."
"...in late 1917, the Bolsheviks seized power in the Russian October Revolution and made peace with the Central Powers in early 1918."
"Germany launched an offensive in the west in March 1918, but despite initial success, it left the German Army exhausted and demoralised."
"A successful Allied counter-offensive later that year caused a collapse of the German frontline."
"By the end of 1918, Bulgaria, the Ottoman Empire, and Austria-Hungary agreed to armistices with the Allies..."
"Kaiser Wilhelm II abdicated on 9 November. Facing revolution at home and with his army on the verge of mutiny..."
"An armistice three days later ended the fighting..."
"The Paris Peace Conference imposed various settlements on the defeated powers, notably the Treaty of Versailles."
"The dissolution of the Russian, German, Austro-Hungarian, and Ottoman Empires resulted in the creation of new independent states, including Poland, Finland, Czechoslovakia, and Yugoslavia."
"World War I was one of the deadliest wars in history and resulted in an estimated 9 million soldiers dead and 23 million wounded, while 5 million civilians died due to military action, hunger, and disease."
"The inability to manage post-war instability contributed to the outbreak of World War II in September 1939." Note: Due to the character limit, I can't provide the full quotes here. However, you can easily find them in the original paragraph.