The bordering countries of Laos & Cambodia were neutral.
Switzerland remained neutral because it was largely inaccessible - very difficult to attack and occupy. Netherlands and Belgium remained neutral for the opposite reason - they were too accessible from either side.
United States
In Europe, the nations that managed to remain neutral were Sweden, Spain and Switzerland. In Africa, all countries were linked to either Italy, France or Britain so none of them remained neutral. The Latin American countries remained largely neutral. Asian countries were practically all dragged into the war, either because they were invaded by Japan or because they were colonies of Japan or one of the Allied nations.
The United States remained neutral in the beginning of WW2 as they did at the beginning of WW1.
The bordering countries of Laos & Cambodia were neutral.
Switzerland and Sweden
They are called neutral nations. These countries were neutral during World War 2: Spain, Norway, Portugal, Ireland, and Switzerland.
Switzerland, Sweden and Ireland
Ireland, Sweden, Switzerland, and Spain are some of the countries off the top of my head
Switzerland remained neutral because it was largely inaccessible - very difficult to attack and occupy. Netherlands and Belgium remained neutral for the opposite reason - they were too accessible from either side.
Sweden Norway
There were 5 neutral nations: Portugal, Spain, Switzerland, Sweden and Republic of Ireland.
United States
Some European countries like Switzerland, Sweden and Spain remained neutral throughout both wars and there were many distant countries in Asia and Africa that remained neutral. Mexico and basically all of South America did not participate in either wars.
The US remained neutral to protect her business establishments it had made with several countries.
In Europe, the nations that managed to remain neutral were Sweden, Spain and Switzerland. In Africa, all countries were linked to either Italy, France or Britain so none of them remained neutral. The Latin American countries remained largely neutral. Asian countries were practically all dragged into the war, either because they were invaded by Japan or because they were colonies of Japan or one of the Allied nations.