- In Spain, an autonomous community (Spanish: comunidad autónoma) is the first sub-national level of political and administrative division, created in accordance with the Spanish Constitution of 1978, with the aim of guaranteeing limited autonomy of the nationalities and regions that make up Spain.
- Associative property (Wikipedia)
In mathematics, the associative property is a property of some binary operations, which means that rearranging the parentheses in an expression will not change the result. In propositional logic, associativity is a valid rule of replacement for expressions in logical proofs.