Mexican flag is full of national symbolism. The green strip represents the Independence Movement. The white stripe represents the purity of the Catholic faith. The red stripe represents the Spaniards that joined in the quest for Independence and the blood of the national heroes. The emblem-shield symbolizes the Aztec heritage.
Throughout skyrim you will go to the Riften fishery and see a woman (Argonian) - No hair. She will say she might lose her job due to a Skooma addiction and needs a Cure Desease potion, once she had this a Goal will come up saying Find out the source of the Skooma.
The only other shortcuts I can think of is to use the portal in Dalaran to get to the Caverns of Time in Tanaris, then travel from there to Un'Goro. You can also be teleported to the Caverns of Time from Shattrath (from World's End Tavern), but you need... honored rep with the Keepers of Time I think. Hope that helps!