The New England Colonies had a landscape which was difficult to because of its mountainous landscape and rocky , and was the of the three regions.

navigate, terrain, coldest.

Explanation:

not sure if they're the right words specifically for your question but similar words should be correct either way, but I know New England colonies were the coldest. they were known to be cold and had similar climate to new England.

“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.