During the tang dynasty, iron and coal industries were very successful.

The Answer is True. China was able to improve their Iron and Coal Industries. Because of their successful economy, many Chinese were able to create inventions such as gunpowder, commercial crops and water-mechanical locks, Because of these inventions they were able to expand more on their knowledge and uses of iron and coal

true is the answer to this

i belive the continental association was created to boycott all contact with british goods.

i also belive it was in december 1, 1774