original: it is the heart of all commercial activities in the country .
simplifications: it is the heart of all profitable activities in the country . it is the heart of all buying and selling in the country . it is the center of all economic activities in the country . it is the heart of all commercial activities in the country . it is the heart of all commercial activities in the country . it is the heart of all commercial activities in the country . it is the center of all commercial activities in the country . this is all commercial activities in the country . it is the heart .