According to official reports, the suicide rate (the number of suicides per 1,000 people) in Greenland was 17 times higher in 1987 than in 1960
Changing from a hunting and fishing society to an industrial society can sometimes cause major changes in crime rates
 Because Greenland changed from a hunting and fishing society to an industrial society from 1960 to 1987, and the dramatic change in suicide rate must be the result of this social change