Neutral powers during World War II

The neutral powers were countries that remained neutral during World War II. Some of these countries had large colonies abroad or had great economic power. Spain had just been through its civil war, which ended on 1 April 1939 (five months prior to the invasion of Poland)—a war that involved several countries that subsequently participated in World War II. During World War II, the neutral powers took no official side, hoping to avoid attack.

Source: Wikipedia — Neutral powers during World War II (CC BY-SA 4.0)