The Pennsylvania General Assembly is the legislature of the U.S. commonwealth of Pennsylvania. The legislature convenes in the State Capitol building in Harrisburg. In colonial times (1682–1776), the legislature was known as the Pennsylvania Provincial Assembly and was unicameral. Since the Constitution of 1776, the legislature has been known as the General Assembly. The General Assembly became a bicameral legislature in 1791.

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The Unified Judicial System of Pennsylvania is the unified state court system of the Commonwealth of Pennsylvania.

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The Government of the Commonwealth of Pennsylvania is the governmental structure of the Commonwealth of Pennsylvania as established by the Pennsylvania Constitution. It is composed of three branches: executive, legislative and judicial. The capital of the Commonwealth is Harrisburg.

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