Agree, VT, you sort of have a mess of questions there. Would be easier to read if they were distinguished (in other words, number them). In any event, the ones that were missed.

Europe basically extends to Moscow, and includes Scandnavia, the Middle East, and Eastern Europe. India is in Asia, as is everything east of it. Turkey is part of Europe.

The OW timetable is fine, just watch the codeshare carriers that aren't eligible for any of the OW fares.

I don't remember there being any LA internal flights that are two class. If it's a problem, then I suggest you issue it as open in the highest class possible, then add the reservation at some other point.

Intra continent travel is either constrained by mileage, by sectors, or by rules. Each trip is different, and it just depends on which you are referring to.

Hubs are open to debate, but for the most part are HKG, SCL, LHR, ORD, DFW, MIA, DUB, MAD, SYD, and HEL. NYC, LAX, NRT are not really hubs, but are places that lots of OW carriers go.

On all trips, you can use any codeshare operated by another Oneworld carrier. So you could book on QF or LA on that route.