Ways to achieve the unification of Germany and Italy.

In Italy, the unification of the country went through revolutions and constant uprisings against Austrian rule. So in 1870 Italy was finally liberated. It is also worth noting that in Italy the popular masses played in the unification of the country.
At the same time, in Germany, the unification took place by declaring war on the countries in which the German population lived. So the war was unleashed with Austria, then with France. We can say that Bismarck played an important role in the unification of Germany.