General Meanings:
* -al: Territorial (relating to territory)
* -ian: Territorial (relating to territory)
* -ization: Territorialization (the act of claiming or controlling territory)
Specific Meanings:
* -ies: Territories (plural form)
* -hood: Territoryhood (the state of being a territory)
* -ism: Territorialism (a policy or doctrine of expanding territory)
Other Possibilities:
* -wise: Territory-wise (in terms of territory)
* -bound: Territory-bound (confined to a territory)
The best suffix to use will depend on the specific context and the meaning you want to convey.