Answer: seatoshiningsea

AnswerCrossword Clue
SEATOSHININGSEABates lyric ending
SEATOSHININGSEAPatriotic song ender
SEATOSHININGSEAEnding of "America the Beautiful"
SEATOSHININGSEANation's width
SEATOSHININGSEAAll, for an anthem writer
SEATOSHININGSEAManifest Destiny's extent