During the High Middle Ages (A.D. 1000-1300), Europe underwent a commercial revolution. A. Merchants adopted new accounting and trading procedures to make long-distance trading more efficient. B. The faster transportation made possible by improved roads expanded the variety of goods that could be brought to European towns from far away. C. The increasing importance of commercial trade led to a decline in the influence of traditional sources of power, such as kings and church leaders. D. The mining of silver improved the security of commercial transactions by allowing coins replace credit and bills of exchange as the means of exchange. E. The Hanseatic League was an association of European towns that obtained shipping, trading, and financial benefits for its members. F. European society became increasingly urban, with better living conditions and s stronger centralized government.