Unification of Germany Bismarck

"Unification of Germany by Bismarck, was not planned, it was improvised." - Discuss.
When Otto von Bismarck became Minister-President of Prussia in 1862, German nationalism was already more than 40 years old. First apparent in the opposition to Napoleon's occupation of the German states, national feeling grew into a movement after 1815. This feeling was encouraged by a growth of interest in German literature and music and by increased economic cooperation between the north German states. By 1848 it was strong enough to make the creation of a united Germany one of the main demands of the revolutionaries.
Bismarck was regarded by many of his generation, and by subsequent contemporaries of Germany, as the founder of the Second Reich. …