The document discusses how trade expanded in Europe during the Renaissance period. It provides context on the Crusades, which reestablished trade between Europe and the East. The Crusades exposed Europeans to new goods and ideas from Muslim civilizations. This increased demand for Eastern goods and spurred more trade routes. The Italian city-states like Venice, Genoa, and Florence became major trading hubs due to their geography, climate, independent governments, and social structures that supported business and commerce. They competed for control of trade in the Mediterranean.