Final answer:
The international conferences in Vienna 1815, Versailles 1919, and Potsdam 1945 had significant impacts on our borders today, shaping the modern-day boundaries of many European countries.
Step-by-step explanation:
The international conferences held in Vienna in 1815, Versailles in 1919, and Potsdam in 1945 had significant impacts on our borders today.
Starting with the Congress of Vienna in 1815, the major European powers gathered to redraw the map of Europe after the defeat of Napoleon. The boundaries established through this conference shaped the modern-day borders of many European countries. For example, Italy and Germany were unified as separate nations during this period.
The Treaty of Versailles in 1919, which marked the end of World War I, resulted in the redrawing of several European borders. New states were created, such as Czechoslovakia, Yugoslavia, and Poland, while empires like the Austro-Hungarian Empire and the Ottoman Empire were dismantled.
The Potsdam Conference in 1945, held after World War II, dealt with the division of Germany and the rebuilding of Europe. The conference solidified the division of Germany into East and West, which lasted until the reunification in 1990.