By c.1200 trade is dominating factor in European economy, although most of the population remains on the land. Safer to Travel -Peace of God applied to merchants. Also increased central control limits, does not stop, private warfare. Gathering momentum - produces own effects. Ready existing Jewish commercial network 6.
Crusades facilitate trade in the East.
The Mediterranean 1. European End Amalfi , Venice, Genoa, Marseilles 3. The Baltic 1. Goods - Fish, Wheat, Fur 2. The Atlantic 1.