Shanna lies inland from Tintallion, north of the Hegemony of the Three Ethshars. This part of the Northern Lands is a somewhere warmer, richer plain than Aala, but still not a great place. There's no real central government, but there's some semblance of national identity, and enough coherence to ward off land-grabs by Tintallion, Sardiron, and the Hegemony. The border between Shanna and the Hegemony has crept northward, though never swiftly or in a dramatic manner.
Shanna and Aala together are about the size of the entire Small Kingdoms.
Shanna, Aala, and the Small Kingdoms put together are almost as big as the Hegemony.