The concept of a police force was brought by the colonists from Britain.
police
Police lights are the red and blue lights that use in an emergency. It was invented by a Superintendent of Signals for the Police Department of Detroit in 1920.
the police force was invented by peel
1887
1887
samella Spencer
Acording to Vic Reeves the Waltzer was invented by the Belgian police
jhon robison
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Benjamin Franklin
The first digital police scanner was invented in the 1970's. Unlike earlier analog version (which were basically AM Radios, as police just used to broadcast using regular radio waves), this scanner was the first to allow you to punch in a frequency to search for the police frequency.
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