What hotbeds of war were formed in the 1930s?

The hotbeds of war in this case are the aggressor states. In the 1930s, there were three such foci:
1) Japan, which suddenly wanted to seize all of Asia and initially attacked China,
2) Italy, which needed Abyssinia (Ethiopia) and
3) Germany, which began to threaten all of Europe and even the world.

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