Elector Frederick I of Brandenburg, also known as Frederick I of Prussia, was a significant figure in German history. Born in 1657, he became the Elector of Brandenburg in 1688 and later the first King in Prussia in 1701. His reign marked the rise of the Brandenburg-Prussia state, which played a crucial role in European politics. Frederick I was known for his efforts to strengthen his territories through military and economic reforms. He invested in infrastructure and promoted the arts, making Berlin a cultural center. His legacy laid the groundwork for the future expansion of the Prussian state.