World war

A world war is a military conflict affecting the majority of the world's major nations. World wars usually span multiple continent

Continent

A continent is a large continuous landmass [i]. ...

s, and are very bloody and destructive. The term has usually been used to apply to two conflicts of unprecedented scale and slaughter that occurred during the 20th century

20th century

The 20th century started on 1 January [i] 1901 [i] and ended on 31 December [i] 2000 [i], according to t ...

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Encyclopedia

A world war is a military conflict affecting the majority of the world's major nations. World wars usually span multiple continent

Continent

A continent is a large continuous landmass [i]. ...

s, and are very bloody and destructive.
The term has usually been used to apply to two conflicts of unprecedented scale and slaughter that occurred during the 20th century

20th century

The 20th century started on 1 January [i] 1901 [i] and ended on 31 December [i] 2000 [i], according to t...

.