Which of the reconstruction amendments was the most important

The Thirteenth; Fourteenth and Fifteenth ammendmends were all important but the Fifteenth amendment is the most important of the three because It prohibits discrimination in voting rights on the basis of race, color or previous conditions of slavery and voting was allowed in some states of the US at that time providing some requirements.

explanation:

a trial judge has broad powers in his courtroom. the judge's decision is usually final for the duration of the trial, and the party's one special type of witness is an expert witness.