Even today, New York and Chicago are filled with buildings from the era, a wholly American distinction. Why were the architects of the day not plying their trade in Europe?
they did in many other cities, just that there were not as many or a need for such tall buildings (extreme high real estate values in nyc/chitown )
I think much of belin was swamp underneath lodon had been a financial capital earlier and filled with eralier period larg buildings Paris ... was a french thing (cannot upstage the Eiffel tower ?)