World History— 1914 — 1945 —

The 20th century’s hinge.

Two wars, thirty-one years, ninety million dead. The era that ended European hegemony, redrew the map, and built the world we still live in.

Why a single hub

The two World Wars are usually taught as separate events — and rightly so. But they make most sense as one extended crisis: the Versailles settlement of 1919 contained the seeds of 1939, and the long 19th-century world ended somewhere in the middle. Treat them as the two acts of the same story.

Two wars

One long crisis.

  • 1914

    World War I

    How a Balkan assassination became four years of trench warfare and 17 million dead.
  • 1939

    World War II

    60 million dead. The Holocaust. The atomic bomb. The end of European hegemony.

Course context

APWH:Unit 7 covers the global crisis (1914–1945).

APUSH:Period 7 covers the U.S. role.