The mid-19th century transformation of Europe was driven above all by the unification of Italy and Germany, which reduced long-standing political fragmentation and introduced powerful new nation-states into an already competitive continental system. In Italy, the kingdom of Piedmont-Sardinia became the nucleus of unification, a process achieved through war, diplomacy, and nationalism between 1859 and 1871 under Victor Emmanuel II (king of Sardinia 1849–1861; king of Italy 1861–1878). In Central Europe, Prussia led the process of German unification through a series of conflicts directed by Otto von Bismarck, culminating in the proclamation of the German Empire in 1871 under Wilhelm I (king of Prussia 1861–1888; German emperor 1871–1888). Together, these developments marked a broader transition from the post-Napoleonic order to an age increasingly defined by nationalism, great-power rivalry, and alliance politics.
This new political landscape was further redefined by the Congress of Berlin (June–July 1878), convened in the aftermath of the Russo-Turkish War (1877–1878). The congress sought to contain Russian influence while preserving a workable balance among the great powers. It recognized the independence of Romania, Serbia, and Montenegro, reduced the size of Bulgaria, and authorized Austria-Hungary to occupy Bosnia and Herzegovina. Although presented as a stabilizing settlement, the Berlin agreements left many national aspirations unresolved and intensified rivalries in the Balkans, contributing to the tensions that would shape late 19th- and early 20th-century European diplomacy.
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Cite This Work
APA Style
Netchev, S. (2026, March 22). Map of Europe after the Congress of Berlin, 1878: From Italian and German Unification to Balkan Crisis. World History Encyclopedia. https://www.worldhistory.org/image/20139/map-of-europe-after-the-congress-of-berlin-1878/
Chicago Style
Netchev, Simeon. "Map of Europe after the Congress of Berlin, 1878: From Italian and German Unification to Balkan Crisis." World History Encyclopedia, March 22, 2026. https://www.worldhistory.org/image/20139/map-of-europe-after-the-congress-of-berlin-1878/.
MLA Style
Netchev, Simeon. "Map of Europe after the Congress of Berlin, 1878: From Italian and German Unification to Balkan Crisis." World History Encyclopedia, 22 Mar 2026, https://www.worldhistory.org/image/20139/map-of-europe-after-the-congress-of-berlin-1878/.
