three major legal requirements must be satisfied before a defendant is called to defend himself for a crime?

Question

there are there requirements

Answer 1

Actus Raeus
Mens Rae
Supporting Evidence?

Answer 2

Actually, there is only one -- that the defendant be notified of the charges against them.

That notice of charges is the only absolute legal requirement before someone can be charged -- "called to defend themself" -- and that's only because of the US Constitutional requirement for due process notice.

In US federal courts -- and under some state constitutions -- there is a common second requirement -- that the evidence against the person be presented to a grand jury for determination of what the charges should be -- but that is not universal (not even in the US) and doesn't apply to all criminal charges, even in jurisdictions that have a grand jury system.

During the defense, there are several additional requirements -- option for counsel -- opportunity to be heard -- mandatory discovery disclosure by the prosecution -- and so on... But those are not required before someone is "called to defend" -- those are part of the defense itself.

Answer 3

The defendant must be properly identified as being the person against whom the charge is brought.
The charge against him must be in proper form and it must be ascertained that he understands its nature. If there is a language problem, then he must be provided with an interpreter.
He must be given the opportunity of legal representation if he so chooses.

Answer 4

crime motive evidence/witnesses

Answer 5

are you asking a question?