The accused's attorney can subpoena anyone they think may assist their case.
2
Generally speaking anyone can be asked to testify. Though someone can be ruled as medically or mentally unable or incompetent to testify.
yes
The respondent is the person or group accused or sued.
An INDICTMENT by a Federal Grand Jury.
two witnesses must testify to the same story and/or the accused must make a confession in a courtroom
two witnesses must testify to the same story and/or the accused must make a confession in a courtroom
The romans.
If the person is involved with the entity accused of the wrongdoing, that person is a "whistleblower."
The 5th Amendment to the Constitution stated that the federal government had to use due process, which is protection from unfair governmental action, and that one can not be forced to testify against one's self in the court of law.
the consent of the accused is achieved and when the nationality of the person who is accused and accuser is full fill and also the immovable property is situated in the territory
federal court