Why Is World War 2 Important in History?

World War 2 is considered one of the most significant events in human history. It was a global conflict that lasted from 1939 to 1945 and involved almost all the major powers of the world.

The war had massive economic, political, and social consequences that continue to shape our world today. In this article, we will explore why World War 2 is so important in history.

Causes of World War 2

The causes of World War 2 are numerous and complex. The Treaty of Versailles, which ended World War 1, imposed harsh penalties on Germany and created a sense of resentment among Germans. This led to the rise of Adolf Hitler and the Nazi Party in Germany, who wanted to expand their territory and establish a new order in Europe.

The War Begins

In September 1939, Germany invaded Poland, triggering a response from Britain and France. Over time, other countries joined the war effort on both sides, leading to a global conflict that involved more than 100 million people from over 30 countries.

The Holocaust

One of the most significant atrocities committed during World War 2 was the Holocaust. The Nazi regime systematically murdered around six million Jews along with other minorities such as Romani people, disabled individuals, homosexuals, and political dissidents.

Technological Advancements

The Second World War saw significant technological advancements that transformed warfare forever. Tanks, airplanes, submarines were used extensively throughout the war. Nuclear weapons were developed at the end of the war which would later become a major factor in international politics.


The consequences of World War 2 were far-reaching and long-lasting. Some immediate consequences include:

  • The establishment of the United Nations (UN)
  • The division of Europe into two blocs, the Western and Soviet
  • The rise of the United States and the Soviet Union as superpowers
  • The beginning of the Cold War


The legacy of World War 2 is still felt today. The war had a profound impact on the world, with significant economic, social, and political consequences.

It led to a shift in power dynamics among nations, with the United States and Soviet Union becoming superpowers. The war also led to significant technological advancements that have shaped our world in countless ways.


In conclusion, World War 2 was one of the most significant events in human history. It had far-reaching consequences that continue to shape our world today.

The war’s legacy is still felt, from international relations to technological advancements. Understanding World War 2 is crucial to understanding our world today and how it got to where it is now.