Which document established these procedures for the admission of new states?

The Admission to the Union Clause of the United States Constitution, often called the New States Clause, found at Article IV, Section 3, Clause 1, authorizes the Congress to admit new states into the United States beyond the thirteen already in existence at the time the Constitution went into effect.

Please mark branliest!

answer: the apache, comanche, kiowa, crow, and osage tribes are plains indians.  

the answer is d trust me