In the lands beyond the Rhine the abbeys were promoting agriculture, with towns growing some time after the corresponding phases were carried through in Gaul, and with the power of the war lord very strongly marked. In the Slavonic lands the phases of settlement and town growth are later still with the church and the war lord in close association, as is exemplified both by the Teutonic Knights in East Prussia and by the inclusion of the cathedral in the castle precincts in Prague and Cracow. Growth of market towns and of communications, still largely mule tracks no doubt, was leading to fixation of language as discussed in an earlier chapter. One may mention, incidentally, that old mule tracks persist on lands in old-fashioned corners like the Channel Islands, where they are very numerous, and may form rings around the demesnes of the more important houses. The growth of markets was bringing neighbours together, weakening dialectal differences, and so helping to fuse local groups into {96} nations on a basis of common language and common tradition expressed in growing poetry and prose in the evolving languages. Against these influences must be set that of the Roman heritage of universalism so vigorously represented by the Church, which the Holy Roman Empire tried so hard to imitate. The poverty of the villagers and their weakness in face of the dangers of the forest and its wanderers, outlaws, and adventurers is an outstanding fact of the development of the next phase. There was insufficient freedom for agricultural experiment save to some extent in the monastery gardens, and insufficient knowledge for useful discussion, so cultivation methods remained in the grip of custom, with the modification due to the spread of the three-field system. Even the fallows could not keep the land up to a proper grade of fertility. So traditional cultivation on lands owned or worked in common by the villagers was ever under threat of disruption, and doubtless the severities of climate and plague in the fourteenth century contributed their quota to the disintegration of the old mode of life. The complaint of diminished fertility made itself heard far and wide, and the end of the Middle Ages witnessed the breakdown of the old village system in the west. Trade and the voyages of discovery furnished supplementary sources of wealth, and the beginnings of larger industry grew out of this. In East-Central Europe change was delayed partly because there was still much forest land to be adapted, but largely because of the absorption of the people in struggles against Turk and Tatar. Even there, however, the old village system decayed in the end, and it is only in central Russia that it has maintained itself among the Slavonic peoples, who, almost to this day, from one point of view, may be looked upon as colonists spreading in the forests and their borders in Muscovy.