Lacking a technological base at first, engineering and hardware was imported from Britain. In many cities, the new railway shops were the centres of technological awareness and training, so that by 1850, Germany was self-sufficient in meeting the demands of railroad construction, and the railways were a major impetus for the growth of the new steel industry. Observers found that even as late as 1890, their engineering was inferior to Britain. However, German unification in 1870 stimulated consolidation, nationalisation into state-owned companies, and further rapid growth. Unlike the situation in France, the goal was the support of industrialisation. Eventually numerous lines criss-crossed the Ruhr area and other industrial centers and provided good connections to the major ports of Hamburg and Bremen. By 1880, 9,400 locomotives pulled 43,000 passengers and 30,000 tons of freight a day.