federatiivisia
Federatiivisia is a term that can refer to several related concepts, primarily in the context of historical political structures and, by extension, in modern political science. Historically, the term derives from the Latin word "foedus," meaning "league" or "covenant." In ancient Rome, federati were allied peoples or tribes who, through a treaty or foedus, were granted certain rights and privileges in exchange for military service or other forms of support. These federati were not fully incorporated into the Roman Empire but maintained a degree of autonomy.
In a broader sense, "federatiivisia" describes a system of governance where constituent states or entities retain