The current U.S. government is called a federalism, which gives the government the power the override state laws with the U.S. Congress.
Examples are used to "exemplify" a situation. Hence, we take an abstract theory and we make it more approachable by showcasing some details. Hence, we have that the example makes abstract idea more concrete. The first 2 choices are wrong since they state the opposite. The 3rd choice is rather irrelevant, examples can make it more or less didactic. Hence, the 4th choice is correct.
Answer:
the growing interdependence of the world’s economies, cultures, and populations
Explanation: