The Polish-Lithuanian Nobility, known as the szlachta, was a privileged class in the Polish-Lithuanian Commonwealth from the 16th to the 18th centuries. This nobility played a significant role in the political and social life of the Commonwealth, holding vast estates and enjoying various rights, including exemption from certain taxes and the ability to participate in the Sejm, or parliament. The szlachta was characterized by a strong sense of identity and a commitment to the ideals of liberty and democracy. They often engaged in military service and were influential in shaping the laws and governance of the Commonwealth, contributing to its unique political structure that emphasized noble privileges and collective decision-making.