1559 map of the Black Sea by Portuguese cartographer Diego Homem
In search of Timur, the Castilian ambassadors leave Constantinople and travel east over the Black Sea and into the mountains beyond.
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Sources:
Narrative of the embassy of Ruy Gonzalez de Clavijo to the court of Timour at Samarcand, A.D. 1403-6, translated by Clements R. Markham. Hakluyt Society, 1859.
Embassy to Tamerlane: 1403-1406, translated by Guy le Strange. Routledge, 2005.
King, Charles. The Black Sea: A History. Oxford University Press, 2005.
Manz, Beatrice Forbes. The Rise and Rule of Tamerlane. Cambridge University Press, 1999.