Answer: RWANDA and BURUNDI
Step-by-step explanation:
Rwanda and Burundi which are each about 373 times smaller than the Continental United States or each about the same size as Vermount are some of the most dense areas in the world in terms of population. It is estimated that in 2020 over 11 million people live in each country which is contributing to a population density of over 500 people per square kilometer again, in each country.