Final answer:
Overfishing, technological changes, and the lack of regulations contributed to the collapse of the cod fisheries.
Step-by-step explanation:
Overfishing, technological changes, and the lack of regulations or cap on fishing all contributed to the collapse of the cod fisheries. The introduction of modern factory trawlers in the 1980s led to overfishing and the pressure on the fishery became unsustainable. Additionally, the lack of regulations or cap on how much could be fished allowed for excessive harvesting. These factors combined caused the collapse of the cod population.