"there was also no escape"

"Horses brought a revolution.  Not since the spread of corn across the continent had Native Americans experienced such an increase in power.  Equestrian nomads could do almost everything -- move, hunt, trade, fight, kill, evade, and protect themselves -- faster and more efficiently.  There was the time before horses, and there was the time after them.  The Blackfoot became more mobile, more powerful, more ambitious, and, potentially, more vulnerable: a single mounted attack could exact far more damage than the on-foot war parties of old.  Native peoples had entered a new technological age from which they benefited, but from which there was also no escape."

-- Indigenous Continent, Pekka Hamalainen