Prof. Monideepa Das, M.A. (Economics) is Assistant Professor at Tilak College of Science and Commerce, Vashi, Navi Mumbai. She has an experience of 6 years in teaching and has qualified SET in Economics. She has published several research articles for International and National Journals. The intention of writing this book is to assist students by providing contents in a simple and convenient language as well as point-wise explanation to offer a better insight into the subject.