If Manchuria was a part of China ,the British Empire should be a part of India.
India got independence in 1947.
If Indian government had declared “Britain islands, Malaya peninsula, Australia, the Middle East, some part of Africa, North America all belong to us!”, what would have happened?
Understandably India would have been bashed as “What a foolish thing you say!” from all the countries.
But do you know the same foolish thing did happen 100 years ago?
It was Xinhai revolution broke out in China 1911.