Causes of Crime

There was an improvement in policing in the late 90's which led to a reduction in murder rates

There was an improvement in policing in the late 90's which led to an increase in murder rates

There was an decrease in the use of around the 80s, which led to less brain damage in infants and thus, less murderers

An increase in material wealth worldwide is correlated with declining crime rates

The higher the level of trust, the higher the homicide rate.

The higher the level of trust, the lower the homicide rate.

The level of trust and the homicide rate are not related

Neither trust nor homicide are important