Comment: Sorry, but the onus is on you.

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In reply to comment: prove they didn't (see in situ)

Sorry, but the onus is on you.

You made the initial assertion, which was not backed up by anything, so you provide the evidence. And remember, "Correlation does not equal Causasion", so simply stating that unions were around when all these things were accomplished doesn't cut it.

“My attitude toward progress has passed from antagonism to boredom. I have long ceased to argue with people who prefer Thursday to Wednesday because it is Thursday.” - G.K. Chesterton