In the history of America's trade and labor unions, the most famous union remains the American Federation of Labor<span> (</span>AFL<span>), founded in 1886 by Samuel Gompers. At its pinnacle, the </span>AFL<span> had approximately 1.4 million members.
</span><span>Because the union did not attempt to organize unskilled workers, it made few gains among new workers during the 1920s, when much of the growth of the economy took place in mass-production industries such as automobiles, rubber, chemicals, and utilities.
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True the US joined in 1945 after the bombing of pearl harbour
Because they had a different currency than the rest of the world and wanted to compete in what historians call the "The Great Coin Race" which started in 19 A.D. and ended in 1339. The soon regretted this.
