In response to the call of the hour there appeared the American Federation of Labor, frequently called in these later days the labor trust. The Federation was first suggested at Terre Haute, Indiana, on August 2, 1881, at a convention called by the Knights of Industry and the Amalgamated Labor Union, two secret societies patterned after the model common at that period. The Amalgamated Union was composed largely of disaffected Knights of Labor, and the avowed purpose of the Convention was to organize a new secret society to supplant the Knights. But the trades union element predominated and held up the British Trades Union and its powerful annual congress as a model. At this meeting the needs of intensive local organization, of trades autonomy, and of comprehensive team work were foreseen, and from the discussion there grew a plan for a second convention. With this meeting, which was held at Pittsburgh in November, 1881, the actual work of the new association began under the name, "The Federation of Organized Trades and Labor Unions of the United States of America and Canada." When this Federation learned that a convention representing independent trade unions was called to meet in Columbus, Ohio, in December, 1886, it promptly altered its arrangements for its own annual session so that it, too, met at the same time and place. Thereupon the Federation effected a union with this independent body, which represented twenty-five organizations. The new organization was called the American Federation of Labor. Until 1889, this was considered as the first annual meeting of the new organization, but in that year the Federation resolved that its "continuity . . . be recognized and dated from the year 1881." For some years the membership increased slowly; but in 1889 over 70,000 new members were reported, in 1900 over 200,000, and from that time the Federation has given evidence of such growth and prosperity that it easily is the most powerful labor organization America has known, and it takes its place by the side of the British Trades Union Congress as "the sovereign organization in the trade union world." In 1917 its membership reached 2,371,434, with 110 affiliated national unions, representing virtually every element of American industry excepting the railway brotherhoods and a dissenting group of electrical workers.