I want to know the answer to the following question:
The rifting in the Cretaceous had what result on the oceans?
All the background I'm provided with is that "As the Atlantic Ocean widened, the convergent-margin orogenies that had begun during the Jurassic continued in the North American Cordillera, as the Nevadan orogeny was followed by the Sevier and Laramide orogenies.". Is that enough to answer the question?