all states have the ability to creat their own laws, as long as those laws also follow the federal (country's government) laws. If you break a state law, which is a law that applies only to that state and is not necessarily a federal law, then you would probably go to state prison. however, if you broke a federal law such as murder or something, then you would go to federal prison and probably have a longer and more serious sentence.
federal prison is much worse... don't drop the soap lol. I've been to jail four or five times but never state or federal. keep your butt muscles nice and tight. oh and your first day in stand your ground they will test you..and keep your head up...
State has the murderers, federal has drug dealers....prison rape isn't as common as people think although there is a lot of consensual stuff (this doesn't mean they're gay it's about working with what you got)
Federal prisons are for people convicted of federal offenses. Many crimes are both federal and state offenses such as, for instance, kidnapping. If one is convicted of the crime of kidnapping and the offense was limited entirely within the bounds of a single state, then it is more likely that the prosecution of the crime and the subsequent conviction (if indeed there IS one) will be handled by the state in which the crime was committed. If, on the other hand, a person is convicted of kidnapping and it was alleged that he had carried his victim across state lines, his case will likely be prosecuted in a federal court, and the perpetrator will serve time in a federal prison. Kidnapping is just an example. The difference between federal crimes and state crimes is basically a jurisdictional issue. Although, to be fair, there are probably a few offenses that are federal crimes only and are not prosecutable at the state level. The opposite is also undoubtedly true. Another example: I do believe that quite a few years ago carjacking became a federal crime.