[Responsibility2nd]

I heard a historian put things this way...

Prior to the Civil War, one would say; “The United States are.....”

After the Civil War, we now say; “The United States is....”

One simple change to an adverb. But it correctly describes what was then. And what is now.

(Grammar Nazi’s. Please correct me if I used the term ‘adverb’ incorrectly. Thanks)

[NorthMountain]

Prior to the Civil War, one would say; “The United States are.....” After the Civil War, we now say; “The United States is....”

That's an accurate description of our downfall.

And I still say "these United States".

[The people have spoken]

“is” and “are” are verbs. You meant verb, not adverb.