Why would different states in the United States still manifest some different kinds of legal systems today? The early colonies could not agree on what other colonies decided to do with their laws.
After the American Revolution, it took many years for some of the states to set up agencies to handle criminal offenders in new ways.
Some territories of the United States were ruled by different countries, so elements of those countries laws remain in those states today.
The criminal codes present in the early colonies were set up to meet the specific needs of its own citizens who believed it was weakness to accept others’ laws.