(1620–88), Elector of Brandenburg 1640–88; known as the Great Elector. His programme of reconstruction and reorganization following the Thirty Years War brought stability to his country and laid the basis for the expansion of Prussian power in the 18th century.
Definition of Frederick William in US English:
Frederick William
proper noun
(1620–88), elector of Brandenburg 1640–88; known as the Great Elector. His program of reconstruction and reorganization following the Thirty Years War brought stability to his country and laid the foundation for the expansion of Prussian power in the 18th century.