Goblin- 70's/80's Wall street traders, Robber barons of the industrial revolution, Venetian merchants.
Human- Middle Ages European
Dwarf- Scottish/ middle ages russia
Night Elf- native americans
Gnome- cyberpunk
Draenei- Russian/East Europe accents indian culture
Worgen- 19th Century English
Orc- Strong african tribes like the Zulu
Tauren- Native American
Forsaken- Gothic
Troll- Jamaican/west african culture/aztec arcitecture
Blood Elf- hell if I know