Short answers, pulled from the story.
The Sudebnik of 1550 was a new legal document created by Ivan IV to centralize power across his vast realm. It marked a decisive break from the past and replaced the insufficient legal framework inherited from Ivan III in 1497.
The legislation explicitly liquidated the judicial privileges held by the aristocracy before this reform. The new laws stripped noble families of their authority to control courts, ensuring state officials held the exclusive right to judge criminal cases.
Elective representatives of rural communities entered official legal proceedings for the first time under the Sudebnik of 1550. These figures included rural heads, jurymen, tselovalniki, and dvorskie who gained the ability to distribute taxes among themselves.
A peasant had to pay two fixed fees to gain freedom from landownership under the Sudebnik of 1550. One fee was called pozhiloye known as a break-away payment and the second fee was called povoz serving as a transportation charge.
The creation of the Sudebnik of 1550 coincided with the convening of the Zemsky Sobor which was the first Russian parliament of feudal estates. Historical records link the code directly to the proceedings of that parliament where the tsar collaborated with assembled estates.