three branches
Democracy
A country divides governments power is divided between three separate branches.
federal
A national government and state governments
It doesn't quite work that way. The States and their people ARE the government, and they have allowed the Federal government to do a very few things like regulate sales of items between and among the States, provide a military to protect all of the States, and to mint money.
Federalisim.
federal
federal
The Government book says Federal system
If the American Government Systems is what you are talking about, then it is divided into the Legislature, the Judicial, and the Executive branches of Government which divides the power evenly among the three branches.
To limit the power of the federal government
The type of government your looking for is Federalist.
A federal government is a system that divides up power between a strong national government and smaller local governments