Which of the following terrain features created a barrier between New
Spain and New France?

Do u have an example of sentences so it could be easier to answer bc I'm not getting the concept .

“the battle of stalingrad is not a turning point necessarily in strategic terms, because a lot more has to be done before the soviets can be certain of defeating germany,” says renowned world war ii historian richard overy. the germans had fought nearly a thousand miles across the soviet union to get to stalingrad.