| |
|
The term is usually used to refer to the conflicts World War I and World War II. Both wars occurred in the 20th century, and involved some degree of participation from most of the world's existing countries. Other wars in earlier periods that saw conflict across the world have been considered world wars, including the Seven Years' War (1756-1763).
Since the conclusion of World War II, the world has generally been united by a common desire never again to have another world war.