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|20th-century conflicts: ← 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s →|
This category has the following 14 subcategories, out of 14 total.
- ► Chaco War (8 C, 12 F)
- ► Little Steel strike (4 F)