Which government system gives states most power federal
confederal
parliamentary
unitary

unitary

Explanation:

A unitary system has the highest degree of centralization. In a unitary state, the central government holds all the power. Lower-level governments, if they exist at all, do nothing but implement the policies of the national government.

true is the answer to this

herodotus taught this. herodotus was an ancient greek historian who was born in halicarnassus in the persian empire. he is known for having written the book the histories, a detailed record of his "inquiry" on the origins of the greco-persian wars.