<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
What was World War 2 about?<|im_end|>
<|im_start|>assistant
World War 2 (1939-1945) was a global conflict primarily between the Axis powers (Nazi Germany, Italy, and Japan) and the Allied forces (the United States, the United Kingdom, the Soviet Union, and others). The war's main causes were unresolved issues from World War 1, economic crises, and aggressive expansionist policies pursued by Axis leaders. The war resulted in millions of casualties, the Holocaust, and significant geopolitical changes, ultimately leading to the rise of the United States and the Soviet Union as global superpowers.<|im_end|>
<|im_start|>user
What was the over-all economical cost for all countries involved in World War 2?<|im_end|>
<|im_start|>assistant
The total cost of World War II has been estimated at over $4 trillion when adjusted for inflation. This figure includes the cost of human lives, property damage, and economic losses. The United States spent the most on the war, just over 340 billion dollars. However, it is important to note that this figure cannot represent the human misery, deprivation, and suffering, the dislocation of peoples and of economic life, or the sheer physical destruction of property that the war involved.

I hope this helps!<|im_end|>