Problem: Hunting is primarily regulated by state law; additional regulations are imposed through United States environmental law in the case of migratory birds and endangered species. Regulations vary widely from state to state and govern the areas, time periods, techniques and methods by which specific game animals may be hunted. Some states make a distinction between protected species and unprotected species (often vermin or varmints for which there are no hunting regulations). Hunters of protected species require a hunting license in all states, for which completion of a hunting safety course is sometimes a prerequisite.
What is sometimes a prerequisite of obtaining a hunting license?
The answer is the following: hunting safety course

Problem: Peel, widely regarded as the father of modern policing, was heavily influenced by the social and legal philosophy of Jeremy Bentham, who called for a strong and centralized, but politically neutral, police force for the maintenance of social order, for the protection of people from crime and to act as a visible deterrent to urban crime and disorder. Peel decided to standardise the police force as an official paid profession, to organise it in a civilian fashion, and to make it answerable to the public.
Whose philosophy influenced Peel?
The answer is the following: Jeremy Bentham

Problem: In 2011, the International Energy Agency said that "the development of affordable, inexhaustible and clean solar energy technologies will have huge longer-term benefits. It will increase countries' energy security through reliance on an indigenous, inexhaustible and mostly import-independent resource, enhance sustainability, reduce pollution, lower the costs of mitigating global warming, and keep fossil fuel prices lower than otherwise. These advantages are global. Hence the additional costs of the incentives for early deployment should be considered learning investments; they must be wisely spent and need to be widely shared".
What costs will solar energy lower?
The answer is the following: the costs of mitigating global warming

Problem: During the Three Kingdoms period of ancient China, there was constant warfare occurring in the Central Plain of China. Northerners began to enter into Fujian region, causing the region to incorporate parts of northern Chinese dialects. However, the massive migration of northern Han Chinese into Fujian region mainly occurred after the Disaster of Yongjia. The Jin court fled from the north to the south, causing large numbers of northern Han Chinese to move into Fujian region. They brought the old Chinese spoken in Central Plain of China from prehistoric era to 3rd century into Fujian. This then gradually evolved into the Quanzhou dialect.
Where was war concentrated during the Three Kings Period?
The answer is the following:
the Central Plain of China