World History · Era— 500 BCE — present —

Every era,
told once.

Source-of-truth pages for the five eras. Each one is the place where the story gets told properly — without course-specific framing. Course pages link in here for the angle they need.

Why these pages exist

The five eras are the source of truth. Each one is the place where the story gets told properly — without course-specific framing. APWH, APUSH, and MWH all link in here for the angle they need, so the Industrial Revolution gets explained once instead of three times.

Five eras

The history of the world, in five pages.

  • 500 BCE

    The Classical World

    Persia, Greece, Rome, Han China, Maurya — empires and the religions that outlasted them.
  • 500 CE

    The Medieval World

    Tang/Song China, Dar al-Islam, Byzantium, the Mongols — not the dark ages.
  • 1450

    The Early Modern World

    The Atlantic becomes a system. Columbian Exchange, gunpowder empires, the slave trade.
  • 1750

    The World of Empires

    Industrial Revolution, Atlantic revolutions, new imperialism, the long 19th century.
  • 1900

    The Modern World

    Two world wars, decolonization, the Cold War, globalization, the era we’re in.