Its on year 1815
No. It was a part of the British Empire, which is quite different.
The British Empire hasn't existed since 1923
Sri Lanka acquired its independence on the 4th of February, 1948 from the British Empire.
No, Sri Lanka was not part of British India. Sri Lanka was a separate British colony known as Ceylon until it gained independence in 1948.
No. They were part of the British Empire (and still are a part of the remnants of it as one of the Commonwealth Dominions), but themselves have never actually had an empire of their own.
Burma, which was then still a part of the British Empire.
There are many Asian countries which were in the British Empire, and Hong Kong was in the British Commonwealth until 1998. Countries in the Empire included India, Pakistan, Tibet (now part of China), Burma (now Myanmar), and Ceylon (now Sri Lanka).
Nominally still part of the Ottoman Empire but administered by the British.
The USA has never been part of the British Empire.
They were all part of the British Empire
By far, the largest portion of North America is still part of the British Commonwealth.