We hear so much banter and rhetoric about making America great again as a country, but tell me, based on past to present throughout the history of the country, was there really ever any period of "greatness" that can be pointed out as an example?
I don't believe it possible to point to a period where everyone will agree America was great then. I wonder if that holds true going forward, but I like to think there is a period coming up where we will all think it is great. Wishful thinking is that will be very soon.
Since, you didn't specify U.S., I'd be willing to consider America circa 1200's as a time of greatness, but just making a point that I think is easy to relate with, but may have certain tribes arguing it was really bad for them during that era.
Which is how or why America shows up as no so great anytime between 1776 and 2016.
Yet, it does seem like there was a period where America was peaking at domestic manufacturing, schools were all doing well, with students being considered best among the world, manners of laypeople were more common, businesses more personal and in general better at customer service, religion not under constant assault, science very optimistic in its aims and practices and not heavily influenced by corporations, news being reported as news and not as commentary, music and movie industry having role as powerful expressions of art that inspired many, willing to go against the grain, plus human rights no longer being entirely swept under the rug to protect the old white male majority.
Not perfect, not utopia, but I would say "great" is fair.
And I'd say around 1920's to about 1979, this was when the U.S. was great.
Still pretty good IMO, and if big everything could be humbled along with certain zealous policies being reversed going forward, it could make the earlier great period look a bit on the mediocre side of things.