Wolves were exterminated very effectively across much of North America. When so called native Americans arrived probably as much as 15000 years ago, they quickly learnt to live alongside wolves. Sure, occasionally one would be killed, but generally they were left alone. Not so for the European settlers; as they had done before in Europe, wolves were hunted mercilessly. So when we started to worry about conservation of these species in the last 50 or so years there were few left. Even in places like Yellowstone they were eradicated.
