 
<translate> National Labor Union (NLU), nke e hiwere na 1866, bụ nke mbụ mba ọrụ federation na United States. A chụrụ ya n'ọrụ n'afọ 1872.  Dabere n'akụkụ Akwụkwọ Nsọ a, na 1866 a kpọrọ mgbalị mbụ e mere na United States maka inwe òtù ndị ọrụ na-arụ ọrụ n'ụlọ ọrụ ahụ? Azịza ya bụ National Labor Union <eng> The National Labor Union (NLU), founded in 1866, was the first national labor federation in the United States. It was dissolved in 1872.

Based on this passage, in 1866 the first attempt in the united states at a union for workers was called the?
The answer is The National Labor Union 