(i) A planning region is a self-created living, having a lifetime which not only supports the life in the region but also radiates unifying forces that enable the region to be a unified regional space so as to facilitate the practice of regional planning. (ii) Any two 1. A planning region should neither be too big nor too small. 2. Boundary should be flexible. 3. There should be natural cohesion. 4. It should have economic harmony. 5. There should be social harmony. 6. Functional unity. (iii) Multi-level Planning 1. Planning for a variety of is regions which together form a system and subordinate system. 2. The country centralised. Single level Plan 1. Single-level Planning done at the national level. 2. Process is is divided into small territorial unit