2nd backup sentence: With the increase of industries and factories, persons are driven from the countryside into the metropolitan areas seeking Positions, leading to pollution, social problems, and overcrowding. The case study is critical needed For most fields for study, find a depth or investigate the whole treatment in https://stanfordcasestudysolution12060.ttblogs.com/12286923/the-single-best-strategy-to-use-for-case-study-analysis