World War I – The conflict that changed world history

The First World War, also known as the Great War, was one of the largest and most devastating conflicts humanity has ever experienced. It took place between 1914 and 1918 and affected almost the entire world. The war left a lasting mark not only on military strategies but also on the social, economic and political development in most of the countries involved. In this article, we will look at the causes, course and consequences of this epic event that shook the foundations of the modern world.

The causes of the First World War

The main cause of the First World War was the rivalry between the great powers of Europe who were clashing for colonial territory, power and influence. Although the specific events that provoked the war vary widely, several factors contributed significantly to its outbreak.

National and ethnic tensions: there were long-standing tensions between different nations and ethnicities in Europe, which resulted in national conflicts and rivalries.

System of alliances: Different military and political alliances were formed between the great powers, which led to increased tensions and risk of clash. The most famous alliances were the Triple Alliance (Germany, Austria-Hungary, Italy) and the Agreement (France, Russia, Great Britain).

Arms Race: During the 19th and early 20th centuries, there was an accelerated development of technology and military weaponry, leading to intense arms races between great powers.

Assassination of Franz Ferdinand: On June 28, 1914, the Austro-Hungarian Archduke Franz Ferdinand and his wife were assassinated in Sarajevo, an act that was initiated by nationalist movements and served as a pretext to declare war on Serbia and start a chain reaction.

The course of the war

The First World War was a conflict of unprecedented proportions, spanning fronts across Europe, from the trenches on the Western Front to large-scale operations on the Eastern Front. It also included a war at sea and even fighting in colonial territories around the world.

The Western Front: most of the attention is directed to the Western Front, where German troops encountered the Allied forces of France and Great Britain. Soldiers resorted to trench warfare, with both sides digging in in their defensive positions, leading to stalemates and tragic loss of life.

Eastern Front: In this part of the conflict, Germany and Austria-Hungary clashed with Russia and other allies. The fighting on this front was more fluid than on the west, but was nevertheless extremely bloody and destructive.

War at sea: Both sides used naval forces to blockade enemy ports and limit supplies. The most famous battle at sea was the Battle of Jutland, where the British and German fleets clashed.

Colonial War: World War I also had an impact on colonial territories around the world. In some cases, there were uprisings and fighting in colonial countries.


World War I had significant effects on the entire world that shaped the future for many decades.

Huge loss of life: the war claimed millions of lives and changed the structure and demography of many European nations.

Economic consequences: The war caused enormous economic damage, including the destruction of the infrastructure and economies of many countries. Some were heavily indebted and lost their previous global influence.

The collapse of the old empires: After the war, Austria-Hungary and the Ottoman Empire collapsed empires, creating new nation states and borders in Europe and the Middle East.

Treaty of Versailles: The war ended with the signing of the Treaty of Versailles in 1919. This treaty imposed harsh conditions on Germany as the presumed main culprit of the war. Germany had to acknowledge responsibility for the conflict, pay huge war reparations, and cede some territory to its neighbors. These harsh conditions contributed to the bitterness and national humiliation that would later have consequences.

The emergence of new ideologies: the First World War led to the weakening of the old orders and the introduction of new political ideologies. The revolution in Russia in 1917 brought the Bolsheviks to power and subsequently the formation of the Soviet Union. Fascism developed in Italy under Benito Mussolini, and the rise of the Nazis began to take shape in Germany.

The decline of the colonial empire: The war weakened and shook the colonial powers, which in turn led to the rise of anti-colonial movements and the weakening of colonial empires. Many countries gained independence, which accelerated the process of decolonization.

Creation of the League of Nations: the League of Nations was created in 1919 to maintain peace and prevent future wars. Unfortunately, the lack of support and effectiveness of this organization allowed for the rise of new conflicts and non-compliance with peace agreements.

Expansion of women’s rights: the war affected society and social norms. Women played a significant role in the war, working in factories and in the service sector, which contributed to a shift towards expanding their rights and seeking equality.


The First World War was a tragic and bloody conflict that caused immense suffering and changed world history. It left lasting effects on politics, economics, society and culture that continue to influence our world today. It had consequences for all the countries involved, whether militarily, economically or politically, and reminds us how vital it is to maintain peace and cooperation between nations. Let us hope that history has taught us a lesson and that in the future we will try to resolve our differences diplomatically and prevent further global conflicts.


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