Trade- Mst Imp= wealth City. Sack Constant 1204- trade treaty Mongol Emp 1221- Dom worlds econ, ext to cent Asia. Lux goods/Necess exch in marks. Salt, grain, porcel, pearl- trad gems, mineral dyes, peacock feath, spices, silks, cott- Egy, Asia, far East. Marco Polo - east 1271, ret 95 stories Est Cult, Ppl, Trads. Advent=fascinat East, put Cen Asia, India, China on West Medi Map. Encour trade/communic.