than any other mode of exchange. Present-giving reflected the reciprocity in Iroquois society. The exchange would begin with one clan giving another tribe or clan a present with the expectation of some sort of needed commodity being given in return. This form of trade ties to the Iroquois culture's tendency to share property and cooperate in labor. In all cases no explicit agreement is made, but one service is performed for the community or another member of the community's good with the expectation that the community or another individual would give back. External trade offered one of the few opportunities for individual enterprise in Iroquois society. A person who discovered a new trading route had the exclusive right to trade along the same route in the future. Often clans collectivized trading routes to gain a monopoly on a certain type of trade. The arrival of Europeans created the opportunity for greatly expanded trade. Furs were in demand in Europe, and they could be acquired cheaply from Indigenous Peoples in exchange for manufactured goods the Indigenous Peoples could not make themselves. Trade did not always benefit the Natives. The British took advantage of the gift-giving culture. They showered the Iroquois with European goods, making them dependent on such items as rifles and metal axes. For a time, the access to guns gave the Mohawk and other Iroquois advantages over other tribes, and they entered trading seriously. The British primarily used these gifts to gain support among the Iroquois for fighting against the French. The Iroquois also traded for alcohol, which the Europeans introduced. Eventually, this would have a very negative influence on their society, as they suffered a high rate of alcoholism. By 1753 Scarouady, an Oneida chief, petitioned the Governor of Pennsylvania to intervene in trade: "Your Traders now bring scarce anything but Rum and Flour; they bring little powder and lead, or other valuable goods . . . and get all the skins that should go to pay the debts we have contracted for goods bought of the Fair Traders; by this means we not only ruin ourselves but them too. These wicked Whiskey Sellers, when they have once got the Indians in liquor, make them sell their very clothes from their backs. In short, if this practice be continued, we must be inevitably ruined." Effect on Iroquois culture and society The structure of the Iroquois economy created a