clipped from: en.wikipedia.org   
In their theory, just as history molds generations, so do generations mold history. Modern Anglo-American history runs on a two-stroke rhythm. The two strokes are an Awakening and a Crisis

Awakening

rising adults are driven by inner zeal to become philosophers, religious pundits, and hippies, alienating children (who see the adult world becoming more chaotic each day) and older generations alike. Civil order comes under attack from a new values regime. Examples

Protestant Reformation (1517-1542

Puritan Awakening (1621-1649

Great Awakening (1727-1746

Second Great Awakening (1822-1844

Third Great Awakening (1886-1908

Consciousness Revolution (1964-1984). Seen as a tumultuous time, somewhat echoing a "Crisis

Unraveling

era of relative peace and prosperity between an Awakening and a Crisis

most recent Unraveling was seen between The Consciousness Revolution and the time just before September 11th (1985-2001?), a time of paradigm shifting. Seen as a positive time, somewhat echoing a "High