How did Wilhelm I become kaiser of Germany?

Wilhelm I became Kaiser of Germany following the unification of the German states in 1871. He was proclaimed emperor in the Hall of Mirrors at the Palace of Versailles after the successful conclusion of the Franco-Prussian War, which had united the German states against a common enemy. Otto Von Bismarck, as Chancellor, played a crucial role in orchestrating the unification and securing Wilhelm's position as the first German emperor. This marked the establishment of the German Empire, consolidating various independent states under one imperial authority.