978 million
_________
That's an old overestimate. It was more like 900 million.
the population of the 1800's was 10.5 in 1801 and in 1851 it had gone up to 21 million _____ That's Great Britain, and it went from 10.94m in 1801 to 20.8m in 1851. England proper had about 8.66m in 1801.
In 1801, the parliaments of Britain and Ireland merged and their title became 'The United Kingdom of Great Britain and Ireland'.
Parliament of Great Britain ended in 1801.
Kingdom of Great Britain ended in 1801.
1801
Incorporate Ireland into the United Kingdom of Great Britain and Ireland.
The United Kingdom.
1801
Ireland
It was added in 1801, following the Union of Great Britain with Ireland in 1801. The newly united country was called the 'United Kingdom of Great Britain and Ireland'.
beau Nash
Ireland