Final answer:
Germany and Italy were similar in the 1800s as both underwent unification, experienced industrialization, built colonial empires, and strengthened their military forces.
Step-by-step explanation:
In the 1800s, both Germany and Italy underwent unification and emerged as stronger nations. Germany achieved rapid industrialization, political stability, and military power, while Italy united its previously divided regions. Both countries experienced a rise in nationalism, built colonial empires, and strengthened their military forces. These similarities in the 1800s made Germany and Italy significant players in Europe and set the stage for future conflicts.