Friedrich II, also known as Frederick the Great, was the King of Prussia from 1740 to 1786. He is renowned for his military victories, administrative reforms, and promotion of the arts and philosophy. Friedrich II played a significant role in the Seven Years' War, expanding Prussia's territory and influence in Europe. Friedrich II was also a proponent of the Enlightenment, advocating for religious tolerance and legal reforms. He corresponded with prominent thinkers like Voltaire and implemented policies that modernized the Prussian state. His reign is often seen as a pivotal period in the development of modern governance in Europe.