What is the system of government in which power is shared between two or more levels of authority, each with meaningful decision-making power? meaningful power sharing takes place in system of government.

A federal system of government is one in which power is shared between two or more levels of authority.

nativists tried to get rid of the immigrants as they thought they were going to ruin the u.s.  

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.