Criminal charges can be brought against those who violate
international environmental laws. Why is there a need for criminal charges?
A. To ensure that common resources are conserved
B. To create jobs for law-enforcement professionals
C. To fund nongovernmental organizations (NGOs)
D. To eliminate obstacles to fair international trade

what's the question?

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.