A few days ago the historian Heather Cox Richardson posted a 'letter' outlining some US economic history, from the early 1900's to now.
The rallying cry for Trump was to Make America Great Again, always a good slogan, because many, not all, have fond memories of "the good old days". And not a new slogan being used by Reagan and Clinton. This referral may be back to the 1920's, but it was never clear to me when he meant. Maybe they meant in the 1960's. Maybe in the pre-Colonial, pre-invasion of North America days.