The document summarizes changes in Europe between the 11th and 12th centuries, including the decline of feudalism and rise of trade, towns, and universities. The growth of trade and towns shifted Europe's economic foundation from agriculture. Italian cities like Venice, Florence, and Genoa led the way in trade. Craft workers began producing goods for European-wide trade, and guilds organized to regulate trades and provide training. Larger towns and cities developed, gaining independence from feudal lords. Conditions in early medieval towns were unsanitary due to waste disposal and narrow streets, though towns continued growing due to expanded trade and wealth.