Explanation:

Urban Agglomeration:-

Majority of metropolitan and mega cities are urban agglomerations.
An urban agglomeration may consist of any one of the following three combinations:
(i) a town and its adjoining urban outgrowths, (ii) two or more contiguous towns with or without their outgrowths, and (iii) a city and one or more adjoining towns with their outgrowths together forming a contiguous spread.