Greatdivide

6 clues
U.S. watershed
Rocky Mountains line
Significant difference
Terrific space between?
Passage from life to death
Passage between life and death
Similar answers:
Afteragreatchef
Agreat
Agreatadvantage
Agreatdeal
Agreatfallandit
Agreatleap
Agreatplayonwords
Agreatwaytohave
Agreatwizardwhy
Ahosedivided
Ahousedivided
Akbarthegreat
Alfredthegreat
Anextradividend
Asgreatasitgets
Aspiretogreatness
Bestandgreatest
Blowsgreatguns
Bruingreat
Cashdividend