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A genealogy of the Selwyn family
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 1920 - 1921 (1 years)
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Date |
Event(s) |
| 1 | 1920 | - 1920—1920: Regular cross-channel air service starts
- 1920—1920: Marconi opens a radio broadcasting station in Britain
- 1920—1920: Thompson patents his machine gun (Tommy gun)
- Feb 1920—Feb 1920: First roadside petrol filling station in UK - opened by the Automobile Association
at Aldermaston on the Bath Road
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| 2 | 1921 | - 1921—1921: Railway Act in Britain amalgamates companies - only four remained
- 1921—1921: Insulin discovery announced
- 1921—1921: First birth control clinic
- 19 Jun 1921—19 Jun 1921: Census: Population - England and Wales: 37.9 Million; Scotland: 4.9 Million; N Ireland: 1.25 Million
- 6 Dec 1921—6 Dec 1921: Anglo-Irish Treaty signed in London, leading to the formation of the Irish Free
State and Northern Ireland
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