Explanation:
Some countries adopt unitary system of government because of the following factors or reasons:
(i) The countries are small in terms of territory and population.
(ii) They are relatively homogeneous and there is absence of marked ethnic inequalities.
(iii) They have limited skilled personnel and economic resources.
(iv) They have identical political culture and history, i.e., common historical and political experience in administration.
(v) They have the desire for the preservation of national unity or identity and values.
(vi) Unitary system of government is simple and cheap to operate.
(vii) It also facilitates quick decision-making.