The World's Fair? Yea, and the planning/implementing of it went a lot like Rio now. Is there really much left from it? I thought there's basically a museum and parks and that's it. People involved in it were also big movers and shakers when it came to the city's planning and architecture before and after, but it's kind of a stretch to say that Chicago has "much" of the actual Fair left at this point. I think he means benefiting insofar as it helped give Chicago recognition or something (and subsequently become what it is now). Ah, gotcha.