Uh the US is a far bigger place? The civil war kicked off our version of the second industrial revolution, and the frontier (see ailroads) acted as starter fluid.
Obviously US was looking great at that time, hence the immigration boom. (As Mark Twain went for in the name, the guilded age did have plenty of issues, but so did Europe. Class was strictly more palpable there, generally speaking.)
Then, as others with that firm foundation, we surfed tsunami of two world wars that swallowed everyone else. That seal Ed the deal (and the second got us out of the great depression).
Obviously US was looking great at that time, hence the immigration boom. (As Mark Twain went for in the name, the guilded age did have plenty of issues, but so did Europe. Class was strictly more palpable there, generally speaking.)
Then, as others with that firm foundation, we surfed tsunami of two world wars that swallowed everyone else. That seal Ed the deal (and the second got us out of the great depression).