What Is the History of World War 2?

World War 2 (WW2) was one of the deadliest wars in the history of humanity, claiming millions of lives and causing massive destruction. The war lasted from 1939 to 1945 and involved major world powers, including Germany, Japan, Italy, the United States, and the Soviet Union. In this article, we will delve into the history of World War 2 in detail.

The Causes of World War 2

The causes of World War 2 can be traced back to the aftermath of World War 1 (WW1). The Treaty of Versailles that ended WW1 imposed harsh penalties on Germany, which included territorial losses, disarmament, and reparations. This led to a rise in nationalism and resentment among Germans towards their government and foreign powers.

In addition to this, Adolf Hitler’s rise to power in Germany played a significant role in starting WW2. Hitler believed in the superiority of the Aryan race and sought to expand German territory through military conquests. He began by annexing Austria in 1938 and then invaded Czechoslovakia before launching a full-scale invasion of Poland on September 1st, 1939.

The Major Powers Involved

The major powers involved in World War 2 were divided into two opposing alliances – the Axis Powers and the Allied Powers.

The Axis Powers were led by Germany and included Italy and Japan as its main allies. The Allied Powers were led by Great Britain, France, China, and later joined by the Soviet Union and the United States.

The Course of the War

The war began with Germany’s invasion of Poland in September 1939. Britain and France declared war on Germany shortly after.

In April 1940, Germany invaded Denmark and Norway before launching an attack on Belgium, France Luxembourg. Within weeks, France fell to German forces leaving Britain as the only major Allied power left in Europe.

In 1941, Germany invaded the Soviet Union, and Japan attacked the United States at Pearl Harbor, drawing the US into the war. The war continued with battles on multiple fronts, including North Africa, Italy, and the Pacific.

The turning point of World War 2 came in 1942 when Allied forces launched a counter-attack against German forces in North Africa. This was followed by successful invasions of Italy and France in 1943 and 1944.

In early 1945, Soviet forces launched a massive offensive against Germany on the Eastern Front. Meanwhile, Allied forces pushed towards Berlin from the west. On May 8th, 1945, Germany surrendered unconditionally to the Allies.

The Aftermath of World War 2

World War 2 left a lasting impact on the world. The war claimed an estimated 70 million lives and caused massive destruction across Europe and Asia. It also resulted in significant political changes, including the emergence of two superpowers – the United States and Soviet Union – and the start of the Cold War.

The United Nations was established in October 1945 to promote international cooperation and prevent future wars. The Nuremberg Trials were held to prosecute Nazi leaders for their war crimes during WW2.


In conclusion, World War 2 was a defining moment in world history that shaped international relations for decades to come. The causes of WW2 can be traced back to unresolved issues from WW1 and Adolf Hitler’s aggressive expansionist policies.

The war involved major world powers divided into two opposing alliances and lasted six years before ending with Germany’s surrender. Its aftermath saw significant political changes with new global superpowers emerging and international institutions established to prevent future wars.