 One of the other significant contributions from Quebec are the weapons of war produced by the province's industry, mainly concentrated in Montreal where munitions factories and aircraft manufacturing plants were built and were running at full capacity.From the airfields along the eastern seaboard come the bombers that are built in North America, as they are ferried across the Atlantic Ocean.The seaports that also are found in this region provide not only the warships but also the merchant shipping from countless nations setting out in convoys to supply Great Britain and other Allies across the Atlantic.