Grand Duchy of Lithuania; state of law; the reality of human rights and freedoms; separation of powers; rule of law; equality of all before the law; drzhavy mutual responsibility and citizen.

Analyze the elements that have contributed in the period of the feudal Middle Ages lay
not in theory, but in practice the basics of law. They are supported by appropriate regulations.
It is shown that in the period of the absolutist, strictly centralized many countries in Europe,
such a system could not long survive and develop. It is shown that the usurpation of power by
the nobility, not perfect relations center and the regions could lead to more significant results