Answer:
B. Land Area Is Divided By Population.
Explanation:
In the U.S., population density is typically expressed as the number of people per square mile of land area. ... The U.S. value is calculated by dividing the total U.S. population (316 million in 2013) by the total U.S. land area (3.5 million square miles).
In civics you study the rights and duties of citizenship which can help you become a better citizen.
