It O should O be O known O to O the O reader O that O at O the O time O when O Baldwin O II. O was O emperor O of O Constantinople/ O where O a O magis O trate O representing O the O doge O of O Venice O then B-LOC resided O and O in O the O year O of O our O Lord O 1250 O Nicolo O Polo B-PER the I-PER father O of O the O said O Marco O and B-PER Maffeo O the B-PER brother O of O Nicolo O respectable B-PER and O weli O informed O men O embarked O in O a O ship O of O their O own O with O a O rich O and O varied O cargo O of O merchandise O and O reached O Constantinople O in B-LOC safety. I-LOC After O mature O deliberation O on O the O subject O of O their O proceedings O it O was O determined O as O the O measure O most O likely O to O improve O their O trading O capital O that O they O should O prosecute O their O voyage O into O the O Euxine O or O Black O Sea. O With O this B-LOC view I-LOC they O made O purchases O of O many O fine O and O costly O jewels O and O taking O their O departure O from O Constantinople O navigated B-LOC that I-LOC sea O to O a O port O named O Soldaia O from O whence O they O travelled O on O horse O back O many O days O until O they O reached O the O court O of O a O powerful O chief O of O the O Western O Tartars O named O Barka O who O dwelt O in O the B-PER cities O of O Bolgara O and O Assara O and B-LOC had I-LOC the O reputation B-LOC of O being O one O of O the O most O liberal O and O civilized O princes O hitherto O known O amongst O the O tribes O of O Tartary. O He O expressed O much O satisfaction O at O the O arrival O of O these O travellers O and O received O them O with O marks O of O distinction. O In O return O for O which O courtesy O when O they O had O laid O before O him O the O jewels O they O brought O with O them O and O perceived O that O their O beauty O pleased O him O they O presented O them O for O his O acceptance. O