For how many years was the Long Parliament convened?

The Long Parliament was convened for a significant duration of 20 years, which is an important period in British history. It first assembled in 1640 and was key in the lead-up to the English Civil War, as it sought to address various grievances against King Charles I. The Parliament was notable for its extensive actions, including the passing of the Triennial Act, which established the requirement for Parliament to be convened at least every three years. It eventually faced dissolution in 1660 when the monarchy was restored with Charles II. Understanding this context highlights the Long Parliament's role in shaping the political landscape of England during a time of considerable change.