The two southern states had a common characteristic: both were condottiere states, not built up from their own population but conquered by generals from the north and ruled for a time by those generals and their northern troops. Natives gradually entered these northern armies and reduced their percentage of northerners, but a gulf remained between the native population, including its gentry, and the alien military rulers. This reduced the striking power of the southern states. On the other hand, this period had its positive element. For the first time there was an emperor in south China, with all the organization that implied. A capital full of officials, eunuchs, and all the satellites of an imperial court provided incentives to economic advance, because it represented a huge market. The peasants around it were able to increase their sales and grew prosperous. The increased demand resulted in an increase of tillage and a thriving trade. Soon the transport problem had to be faced, as had happened long ago in the north, and new means of transport, especially ships, were provided, and new trade routes opened which were to last far longer than the three kingdoms; on the other hand, the costs of transport involved fresh taxation burdens for the population. The skilled staff needed for the business of administration came into the new capital from the surrounding districts, for the conquerors and new rulers of the territory of the two southern dynasties had brought with them from the north only uneducated soldiers and almost equally uneducated officers. The influx of scholars and administrators into the chief cities produced cultural and economic centres in the south, a circumstance of great importance to China's later development. 3 _The northern State of Wei_