Lithuania's laws were codified and reforms enacted in 1529, 1557, 1565–1566 and 1588, gradually making its social, legal and economic system similar to that of Poland, with the expanding role of the middle and lower nobility.
立陶宛的法律被编为法典，改革分别在1529年、1557年、1565年与1566年之交及1588年得到推行，逐步使立陶宛的社会制度、法律体制和经济体系更加类似于波兰，并加大了中小贵族的作用。