Why did the tuscarora join the iroquois confederacy

Long before the arrival of the English and French colonists in North America, five autonomous tribes had come together to form an alliance known as the League of Five Nations, or the Iroquois Confederacy. The five member nations were the Onondaga, the Cayuga, the Oneida, the Mohawk, and the Seneca. The purpose of the League was to renounce warfare among the member nations and to present a unified front against other nations. The League was created because of the spiritual vision of one man-Deganawida-and the speaking ability of another-Hiawatha. With the arrival of the French and English colonists in the American Northeast, the League became an important trading partner and power broker.