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This category has the following 18 subcategories, out of 18 total.
- 800s in the Byzantine Empire (1 C, 7 P)
- 800s conflicts (8 P)
- 800s disestablishments (3 C, 2 P)
- 800s establishments (12 C)
- 800s in religion (2 C)
- 800s works (9 C)