The 20th century was marked by significant geopolitical events that reshaped the global order and had far-reaching consequences. Here are some major geopolitical events of the 20th century: World War I (1914-1918): The assassination of Archduke Franz Ferdinand of Austria triggered a chain of events leading to a global conflict. The war involved major powers of the time, including European nations and later the United States. The Treaty of Versailles, signed in 1919, redrew borders, dissolved empires, and set the stage for future geopolitical tensions. Russian Revolution (1917): The Bolshevik Revolution led by Vladimir Lenin overthrew the Russian monarchy and established the Soviet Union. The event had profound ideological and geopolitical implications, sparking fears of communism and influencing global power dynamics. World War II (1939-1945): The largest and deadliest conflict in human history, involving countries from around the world. Axis powers, led by Germany, Italy, and Ja...