Solution:Federal state is a form of government in which power is distributed between a central authority and a number of constituent territorial units. It is the opposite of the unitary state.
In this type, there are two or more tiers of government, each having their separate powers and jurisdiction. Shape, size, diversity, presence of core areas are favorable for the formation of Federal State. While homogenous population resembles the 'nation' did not favors for separating power causes unfavorable for federal state.