The United States remained neutral. Yes it was a good decision because if they would have picked a side they most likely would've been pulled into the war. Remaining neutral in most cases of war keeps you out of danger, unless an attacking country attacks you first, pulling you into the war. (Like Japan attacking America, bringing them into WW2)
Labor unions were used to help people convince the large corporations they worked for to give them better pay, more benefits, and a safer working environment.
