Six Kingdoms
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Six Kingdoms may refer to:
- In biology, a scheme of classifying organisms into six kingdoms:
- Proposed by Carl Woese et al: Animalia, Plantae, Fungi, Protista, Archaea/Archaeabacteria, and Bacteria/Eubacteria
- Proposed by Thomas Cavalier-Smith: Animalia, Plantae, Fungi, Chromista, Protozoa and Eukaryota
- In Chinese history, six of the Seven Warring States that formed an alliance but were still conquered by Qin: Qi, Chu, Yan, Han, Zhao, and Wei