What does whose stern impassioned stress mean?

"Whose stern impassioned stress" is part of a line from America the Beautiful. This means that the people who are being referred to are having to work hard, but they are passionate about completing the task even though the work they are doing is stressful and taxing. In context of the song, this line refers to the work the pilgrims had to do to achieve progress.

Ithink the example would of been if a girl made you mad about something and you talk about her on your social media post than can cause cyberbullying without talking it out to the girl who made you chose to post about it and let the while world know #stop& that lol

He should show his work.