(CERCLA) is a United States federal law designed to clean up sites contaminated with hazardous substances and pollutants.
The law is the correct answer.
In a democracy, the power is held by the people. These people are the ones responsible for electing the person who is going to represent them. Also, the majority of citizens allow certain authorities to create and enforce rules of behavior, also known as laws, within the territory.
In order to answer this question, you should best use a map and a ruler - once you figure out how far on your map 5000 km is (5000 i more practical than 4995), you can find two countries separated by this distance.
I found North Korea and Papua New Guinea, but also Papua New Guinea and Thailand are separated by a similar distance and the shortest distance between US and Chile is also similar