You must have joined Naxxramas, which is a progressive realm and is currently in Vanilla stage (Pre-TBC). If you'd like to play WotLK, where all the races and locations are available, you need to switch to Redemption realm.

Yes please; the current restriction is way too low.

There is a Players Map section, which provides you with the same information:

https://www.wow-mania.com/page/map

Kind Regards,
Zurvion