After Columbus's voyage to the new world, how quickly did this knowledge spread into the other parts of the old world? For example, when did the existence of the new world become "common knowledge" (for laypeople, or if that's too vague then for the rulers of various kingdoms) in various European countries, middle eastern civilizations, the Indian subcontinent and China?
If this is too broad or too vague, I'm particularly interested in the general awareness in Indian subcontinent.