 
<translate> Kungiyar Kwadago ta Kasa (NLU), wacce aka kafa a 1866, ita ce kungiyar kwadago ta farko a Amurka. An rushe shi a shekara ta 1872.  Dangane da wannan nassi, a 1866 yunƙurin farko a Amurka a ƙungiyar ma'aikata an kira shi? Amsar ita ce Kungiyar Kwadago ta Kasa <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 