Neutral nations included countries that did not fight on either side.
In Europe, Switzerland was neutral.
Spain was ostensibly neutral but aided the Axis (Germany).
Ireland was neutral, its shipping being interdicted by both the Allies and Axis, but in many cases the Irish acted in concert with the Allies, as their own sovereignty was at risk.
The Vatican was neutral and was occupied by neither side.
Switzerland
Spain, Turkey, and Sweden
Switzerland remained neutral through both world wars.
. . . but the US was not a neutral nation in world war 2. The US was one of a number of nations that composed the 'Allies' in declaring war on the empire of Japan.
The nation of Switzerland managed to stay neutral throughout WW2 .
Not at war
Switzerland, and Netherlands were neutral during world war 2
Spain was not involved in World War 2. They were neutral
The most advanced nation in world war 2 was probably the united states.
Russia, or rather, the Union of Soviet Socialist Republics; the Soviet Union. Every nation in Europe was devastated during World War II, with the exception of Switzerland, which remained neutral.
yes
no it was mexico