How are rules for a trial determined?

After many weeks or months of preparation, the prosecutor is ready for the most important part of his job: the trial. The trial is a structured process where the facts of a case are presented to a jury, and they decide if the defendant is guilty or not guilty of the charge offered. During trial, the prosecutor uses witnesses and evidence to prove to the jury that the defendant committed the crime(s). The defendant, represented by an attorney, also tells his side of the story using witnesses and evidence.

In a trial, the judge — the impartial person in charge of the trial — decides what evidence can be shown to the jury. A judge is similar to a referee in a game, they are not there to play for one side or the other but to make sure the entire process is played fairly.

Unless a statute or these rules permit otherwise, the government must prosecute an offense in a district where the offense was committed. The court must set the place of trial within the district with due regard for the convenience of the defendant, any victim, and the witnesses, and the prompt administration of justice.

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Ireally don't know