I like reading about WoW Lore, there's some interesting back-stories and a lot of it reminds me of the works of Raymond E.Feist.

So here's the history of the Worgen + Goblins.



Worgen

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Ironically, for a nation we will only get to see with the arrival of the Cataclysm expansion, Gilneas has a long and storied history both within the Warcraft setting and in the games that have comprised it. Colonized during the first flowering of the Arathor after the Troll Wars, Gilneas grew alongside the other colonized regions of the Arathi Empire even as the heart of that empire faltered. As proud Strom entered a period of decline, Gilneas joined other human settlements like Lordaeron and Stormwind in becoming fully independent, and a strong but insular culture developed here. How then, did Gilneas go from one of the strongest of humanity's kingdoms to what it will be when you come to it as a player? It's said that pride goes before the fall, but for Gilneas, it could be said that pride both precipitated and delayed its fall, and that what kept it secure for decades is what ultimately brought about its current fate.

Read the rest of the Worgen history here.

Goblins

Quote:

The shrewd and tenacious goblins are the Horde's newest playable race with the Cataclysm expansion. Though considered the go-to neutral race in World of Warcraft thus far, the goblins have an active history of working with the Horde -- as well as some shady deaings with many of Azeroth's other sentient races -- in previous Warcraft games. So strong is the goblins' reputation for driving a hard bargain that a dwarvish saying for doing the impossible is "cheating a goblin". Interestingly, they weren't always the eccentric and self-destructive inventors, tradesmen, and arms dealers we know them to be today. The first reference to goblins in official lore, chronologically, is in the War of the Ancients trilogy of novels, which indicates that the goblins have been around for quite some time. Once a reclusive, barely sentient race native to the isle of Kezan, the race was in thrall to the jungle trolls, employed as miners in the island's tunnels and caves. It was while mining that goblins first discovered the mineral kaja'mite, the key to their meteoric rise in intelligence.

Read the rest of the Goblin history here.