Why does Poland have such low numbers of rapes, gang rapes, assaults, murder, robberies & violent crime in general compared to the rest of Europe?

Why does Poland have such low numbers of rapes, gang rapes, assaults, murder, robberies & violent crime in general compared to the rest of Europe?
Why does Poland have such low numbers of rapes, gang rapes, assaults, murder, robberies & violent crime in general compared to the rest of Europe?
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