Frederick II of Prussia, also known as Frederick the Great, was a king who ruled from 1740 to 1786. He is famous for his military successes and for expanding the territory of Prussia. Frederick was a patron of the arts and philosophy, promoting the ideas of the Enlightenment in his court. He believed in religious tolerance and implemented various reforms to modernize his kingdom. Under Frederick's leadership, Prussia became a major European power. He is well-known for his innovative military strategies, particularly during the Seven Years' War. Frederick's legacy includes not only his military achievements but also his contributions to culture and governance, making him a significant figure in European history.