The Romans pretty much had their way (peak) for 300 years. Yes decline was not instantaneous, but no one can complain about having 300 years of relative success/dominance, which they did once they defeated the Carthaginians all the way to about 200 A.D.

The Romans pretty much had their way. Their decline happened pretty much in the same way all civilizations end the elite’s participation in defending the empire or their civilization became less and less in short decadence sound familiar? Arguably the Civil War was probably the last war where the largest percentage of the elite actually participated in fighting the war and that percentage has gone down in every war since.

The United States from its founding until about 1990 had its way but now the shine appears to be coming off slowly. The way it currently looks 2100 is probably going to have a new number 1.