Khan Academy

Italy backs out of Triple Alliance (K-A)

Japan in World War I (K-A)

Serbian and Macedonian fronts (K-A)

Serbian losses in World War I (K-A)

Battles of Verdun, Somme and the Hindenburg Line (K-A)

Closing stages of World War I (K-A)

Comparing the Eastern and Western fronts in WWI (K-A)

Schlieffen Plan and the First Battle of the Marne (K-A)

Technology in World War I (K-A)

1917 speech by Senator George Norris in opposition to American entry (K-A)

World War I Eastern front (K-A)

Blockades, u-boats and sinking of the Lusitania (K-A)

United States enters World War I (K-A)

Wilson's war message to Congress — April 2, 1917 (K-A)

Arabia after World War I (K-A)

Zimmermann Telegram (K-A)

Sinai, Palestine and Mesopotamia campaigns (K-A)

Sykes-Picot Agreement and the Balfour Declaration (K-A)

Theodor Herzl and the birth of political Zionism (K-A)

Arabia after World War I (video) (K-A)

Deaths in World War I (K-A)

More detail on the Treaty of Versailles and Germany (K-A)

Paris Peace Conference and Treaty of Versailles (K-A)

Woodrow Wilson's Fourteen Points (K-A)

Hitler and the Nazis come to power (K-A)