<u><em>Because Before the canals the coal had to be transported by horses and also transported by some rivers. This was a time consuming and expensive endeavor which if continued would not have made Manchester the center of industry. That is why the canals were important and especially the Bridgewater Canal which cut the prices of coal in half. Have a Great Day!</em></u>
they collectively (as a union) bargained for wage increase. B and D could have been two points they used in said meeting, but that is not what the question asked
