Wilhelm I was the first German Emperor, reigning from 1871 until his death in 1888. Born on March 22, 1797, he was the King of Prussia from 1861. His leadership during the Franco-Prussian War helped unify Germany, leading to the establishment of the German Empire. Wilhelm I was known for his conservative policies and support of military expansion. He worked closely with his Chancellor, Otto von Bismarck, to strengthen the nation. His reign marked a significant period in European history, as Germany emerged as a major power on the continent.