Cities, as in Europe, were the focuses of manufacture and trade. Ottoman cities had a large out put of goods, where comprehensive guild systems maintained quality at the expense of competition. However, the main source of Ottoman wealth came from less industry reliant goods and raw materials, mainly items from the east such as silk and gemstones; also the passage of such goods generated revenue due effective taxing measures.
Cities in Europe were hubs for manufacturing and trade; similarly, Ottoman cities produced a significant volume of goods through guild systems that prioritized quality over competition. Nonetheless, the Ottomans' main financial gain stemmed from non-industry-based items like silk and gemstones, as well as revenue derived from taxing these commodities.