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From 1888 until 1931
- Single entity that acts worldwide.
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From 1931 onwards
2.1 US-based company
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Territory/market: USA, Canada and Mexico.(1931-1987)
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Despite the change in owner, consider as 1 label.
2.1.1 pre-CBS (1931-1938)
2.1.2 CBS (1938-1987)
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2.2 Japan-based company
- Territory/market): Japan ---> Nippon Columbia (from 1931)
2.3 - '''Columbia label whose owner is a company based in Spain'''
Territory (market): Spain ---> Columbia [ES] (1935 to 1984)
2.4 - '''Columbia label whose owner is a company based in UK'''
Territory (market): The rest of the world ---> Columbia [EMI] (1931 to 1990)
I have left out of the scheme the role of SONY as buyer and ''great reunifier of the Columbia label''.