| British Monarchs | |||||||||||||||||||
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| Victoria 1837 to 1901 | |||||||||||||||||||
| What was happening in the World in 1851 | |||||||||||||||||||
| March 30: second full British census-improvements in data | |||||||||||||||||||
| compared with the first | |||||||||||||||||||
| May 1: Great exhibition of the works of industry of all nations | |||||||||||||||||||
| (crystal palace) exhibition opened in Hyde park | |||||||||||||||||||
| Window Tax replaced by House Duty | |||||||||||||||||||
| Photography is popularised by introduction of "wet collodion" process | |||||||||||||||||||
| Singer produces first practical sewing machine (in USA) | |||||||||||||||||||
| Gold discovered in Australia | |||||||||||||||||||
| Verdi Rigoletto | |||||||||||||||||||