The roots of I. W. W.-ism reached out most vigorously and numerously in the western part of the United States, and the greater part of its strength today is derived from its western membership. The way was prepared for it most largely by western organizations--the Western Federation of Miners being the forerunner _par excellence_ of modern I. W. W.-ism. Two organizations in the East, that is, having their chief strength in the East, played a highly important rôle during the decade preceding the launching of the I. W. W. These organizations were the Socialist Labor party and its trade-union "brain child," the Socialist Trade and Labor Alliance. Adequately to fill in this sketch of origins, it is necessary to refer briefly to these two organizations, especially to the S. T. & L. A., the Socialist Labor party's bright ideal of all that a labor union ought to be. The Socialist Labor party was organized in 1877. It was a merger of the National Labor Union, the North American Federation of the International Workingmen's Association and the Social Democratic Workmen's Party. It was first known as the Workmen's Party of the United States. The German socialist trade-union element predominated in it.[57] The Socialist Labor party has always been emphatically Marxian and its leaders have been so decidedly doctrinaire in their interpretation of Marxian socialism and in their application of it to the practical work of socialist campaigning and propaganda that they have been not unjustly called impossibilists. Since the organization of the Socialist party in 1901 these two political parties of the socialist faith have been in open and bitter opposition to each other. The Socialist party adopted an opportunist policy, endorsed and often leagued itself with the conservative trade unions, refrained from any attempt to form or coöperate in the formation of socialist unions, and contented itself with the endeavor to make the existing unions socialistic by converting their individual members to socialism--a policy which came to be known as "boring from within." The Socialist Labor party, on the other hand, embraced a doctrinaire "impossibilist" policy, violently attacked the trade unions, made its slogan "no compromise and no political trading," and insisted that new unions, industrial in structure and socialist in purpose and principle should be created in opposition to the craft unions, whose structure and spirit it despaired of changing by "boring from within." The Socialist party has waxed strong and powerful. Its rival has languished and is today too small a group to be called a party.