The early decades of the twenty-first century may be the most revolutionary period in modern history, with tectonic shifts in globalization, technology, identity, and geopolitics. But monumental change can be found across history as humans have lived, and thrived, through more than one great realignment. What were history’s most transformative revolutions, and how can they help us to understand our own fraught world today? CNN host Fareed Zakaria investigates the eras and movements that have shaken norms while shaping the modern world, with a focus on three such periods that hold profound lessons for today.

Recorded on April 26, 2025