What event made the unification of Italy or Germany possible?

The unification of Italy and Germany were made possible by several events; however, one crucial factor for both unifications was the Franco-Prussian War of 1870-1871. Here's how it played a vital role:

Unification of Germany:

- Prussia's Victory: The decisive victory of Prussia and its allies over France in the Franco-Prussian War contributed to the rise of Prussian dominance in the German region. Prussian Chancellor Otto von Bismarck skillfully used these military successes to strengthen the Prussian position.

- Uniting German States: With France defeated, Bismarck leveraged the momentum to initiate diplomatic negotiations. He forged alliances and convinced various German states to join Prussia in a federal empire - the German Empire. These smaller states saw Prussia's power and military success and embraced unification under Prussian leadership.

Unification of Italy:

- French Withdrawal from Rome: As France engaged in the Franco-Prussian War, they withdrew the garrison stationed in Rome, which had protected the Papal States against the forces in Italy seeking unification.

- Capture of Rome: With Papal States unprotected, Italian forces moved into Rome unopposed and annexed it into the Kingdom of Italy, completing the unification process and marking the establishment of Rome as the capital of the united Italy.

In both cases, the Franco-Prussian War created opportunities and realignments that allowed Prussia and Italy to consolidate power, negotiate alliances, and ultimately achieve long-sought unification through diplomatic maneuvering and military triumphs.