Unification of Germany was made possible largely by Bismarck, as there were other factors prior to his policies that had able Germany to be unified as one.
Firstly, the Crimean War has caused the collapsing of the Congress of Vienna, which in turn resulted, to having 'freed' individual small German states to be on their own. This factor created a window of opportunity to Prussia and Bismarck as the small states could be easily brought under the Prussian Empire, if necessary with the help of the Prussian Army. An example of how Prussia's strategy worked was when trying to get Schleswig-Holstein to be part of Prussia. …
