The ”peaceful” Pilgrims massacred the Pequots and destroyed their fort near Stonington, Connecticut, in 1637. A 19th-century wood engraving (above) depicts the slaughter. (The Granger Collection, NYC)

It’s all a bit of a blur, isn’t it? That little-remembered century—1600 to 1700—that began with the founding (and foundering) of the first permanent English settlement in America, the one called Jamestown, whose endemic perils portended failure for the dream of a New World. The century that saw all the disease-ridden, barely civilized successors to Jamestown slaughtering and getting slaughtered by the Original Inhabitants, hanging on by their fingernails to some fetid coastal swampland until Pocahontas saved Thanksgiving. No, that’s not right, is it? I said it was a blur.

Enter Bernard Bailyn, the greatest historian of early America alive today. Now over 90 and ensconced at Harvard for more than six decades, Bailyn has recently published another one of his epoch-making grand narrative syntheses, The Barbarous Years, casting a light on the darkness, filling in the blank canvas with what he’s gleaned from what seems like every last scrap of crumbling diary page, every surviving chattel slave receipt and ship’s passenger manifest of the living and dead, every fearful sermon about the Antichrist that survived in the blackened embers of the burned-out churches.

Bailyn has not painted a pretty picture. Little wonder he calls it The Barbarous Years and spares us no details of the terror, desperation, degradation and widespread torture—do you really know what being “flayed alive” means? (The skin is torn from the face and head and the prisoner is disemboweled while still alive.) And yet somehow amid the merciless massacres were elements that gave birth to the rudiments of civilization—or in Bailyn’s evocative phrase, the fragile “integument of civility”—that would evolve 100 years later into a virtual Renaissance culture, a bustling string of self-governing, self-sufficient, defiantly expansionist colonies alive with an increasingly sophisticated and literate political and intellectual culture that would coalesce into the rationale for the birth of American independence. All the while shaping, and sometimes misshaping, the American character. It’s a grand drama in which the glimmers of enlightenment barely survive the savagery, what Yeats called “the blood-dimmed tide,” the brutal establishment of slavery, the race wars with the original inhabitants that Bailyn is not afraid to call “genocidal,” the full, horrifying details of which have virtually been erased.

More: The Shocking Savagery of America’s Early History