1. What is difference between unitary
and federal government?

2. • In a unitary government, the central government possesses much
authority and decision-making power. Local governing bodies simply serve
as administrative arms of the central government. Great Britain is a
familiar example of a unitary government; individual British counties have
little of the power commonly exercised by American states. France, with
90 departments grouped into 36 provinces, also has a unitary form of
government. It is important, however, to note that unitary governments
are not inherently less democratic than other forms.
In a federal government, power is split between a central government
authority and its constituent states. Usually, an overriding law of the land,
known as a constitution, allocates duties, rights, and privileges to each
level of government. The constitution usually defines how power is shared
between national, state, and local governments; the power to amend this
constitution is usually granted to the citizens or their governmental
representatives.

3. • Unitary (France)--same laws throughout the country--the national
government makes the rules.
Confederate (the UN, CSA, pre-constitution USA)--a loose organization of
smaller places (states) that make their own rules. The confederate country
asks its states to work together, but lacks the power to make them.
Federal (USA)--grants the national and state or local governments specific
powers. They share power in certain defined ways.
Presidential (USA)--the chief executive (president, the one who manages
the country) is a separate elected official from the legislature.
Parliamentary (UK, and most other republics)--the chief executive (prime
minister) is chosen from the majority party from the legislature. If there is
no majority party, a coalition is formed from the different parties to make
a majority, and the coalition decides who the prime minister will be.