during the second world war , britain commenced Process_start a nuclear weapons project , known as tube alloys , but the 1943 quebec agreement merged Cause_to_amalgamate it with the american manhattan project .

unk guay ( 23 september 1918 UNK 12 january 1951 ) was a canadian mass murderer Killing , who on 9 september 1949 , killed Killing 23 people aboard canadian pacific air lines flight 108 near unk , quebec using Using a dynamite time bomb .

the united states detonated Attack two nuclear weapons over the japanese cities of hiroshima and nagasaki on august 6 and 9 , 1945 , respectively , with the consent Commitment of the united kingdom , as required Imposing_obligation by the quebec agreement .

over land , the hurricane Catastrophe weakened Cause_change_of_strength , and after becoming Becoming an extratropical cyclone Catastrophe on september 2 , merged Cause_to_amalgamate with another extratropical system over quebec on september 4 .

the british later lost Earnings_and_losses the battle of sainte-foy west of quebec ( 1760 ) , but the french ceded Surrendering canada in accordance with the treaty of paris ( 1763 ) .