Throughout the 18th and 19th centuries, Nablus was the principal trade and manufacturing center in Ottoman Syria. Its economic activity and regional leadership position surpassed that of Jerusalem and the coastal cities of Jaffa and Acre. Olive oil was the primary product of Nablus and aided other related industries such as soap-making and basket weaving. It was also the largest producer of cotton in the Levant, topping the production of northern cities such as Damascus. Jabal Nablus enjoyed a greater degree of autonomy than other "sanjaqs" under Ottoman control, probably because the city was the capital of a hilly region, in which there were no "foreigners" who held any military or bureaucratic posts. Thus, Nablus remained outside the direct "supervision" of the Ottoman government, according to historian Beshara Doumani.