The Idaho Territorial Legislature was the governing body of the Idaho Territory from its establishment in 1863 until Idaho became a state in 1890. It consisted of a bicameral system, including a House of Representatives and a Council. The legislature was responsible for creating laws, managing territorial finances, and addressing local issues. During its existence, the legislature passed various laws that shaped the development of the territory, including those related to land use, education, and infrastructure. The work of the legislature laid the groundwork for Idaho's future governance as a state, influencing the formation of the Idaho State Legislature after statehood.