+69. Group interests and policy.+ Groups select, consciously and unconsciously, standards of group well living. They plan group careers, and adopt purposes through which they hope to attain to group self-realization. The historical classes adopt the decisions which constitute these group plans and acts, and they impose them on the group. The Greeks were enthused at one time by a national purpose to destroy Troy, at another time by a national necessity to ward off Persian conquest. The Romans conceived of their rivalry with Carthage as a struggle from which only one state could survive. Spain, through an effort to overthrow the political power of the Moors in the peninsula and to make it all Christian, was educated up to a national purpose to make Spain a pure "Christian" state, in the dogmatic and ecclesiastical sense of the word. Moors and Jews were expelled at great cost and loss. Germany and Italy cherished for generations a national hope and desire to become unified states. Some attempts to formulate or interpret the Monroe doctrine would make it a national policy and programme for the United States. In lower civilization group interests and purposes are less definite. We must believe that barbarous tribes often form notions of their group interests, and adopt group policies, especially in their relations with neighboring groups. The Iroquois, after forming their confederation, made war on neighboring tribes in order either to subjugate them or to force them to come into the peace pact. Pontiac and Tecumseh united the red men in a race effort to drive the whites out of North America.