What is London declaration?
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The London Declaration was a declaration issued by the 1949 Commonwealth Prime Ministers' Conference on the issue of India's continued membership of the Commonwealth of Nations, an association of independent states formerly part of the British Empire, after India's transition to a republican constitution.

Explanation:

Drafted by the Indian statesman V. K. Krishna Menon, the Declaration stated the agreement of the prime ministers to the continued membership of India in the organization after it becomes a republic. By that declaration, the Government of India had expressed its acceptance of the King as "the symbol of the free association of its independent member nations and as such the Head of the Commonwealth."

The Declaration dealt only with India, seen as an exceptional case, and it did reaffirm that the other members of the British Commonwealth owed common allegiance to the Crown. However it did establish a precedent that republicanism was not incompatible with membership in the organization.

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