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A question to the Sinophiles (Hendryk, Faeelin et al) of the Board: If Egypt was conquered by Europeans (say, Normans ) around perhaps 1083, what technologies (and how soon) could be transported from China. IIRC, the Song had quite some successes in engineering and such, and has ships go as far as the Red Sea. How much would this quicken if the Europeans became active in the Indian ocean in the late 12th century?