federative
/ˌfɛdərətɪv/Definitions
1. adjective
relating to or forming a federation; relating to the formation or operation of a federation
“The new government was described as a federative system, where power was distributed among different regions.”
2. noun
a person who advocates or supports a federal system of government
“He was a strong supporter and a vocal advocate for the establishment of a more federative system in the country.”
3. noun
a person who advocates or supports the formation of a federation
“The leader’s federative policies led to the creation of a new country through the union of smaller states.”