Answer:
greatest - romania; least - us; proof below
Step-by-step explanation:
to answer this question we must first find all the population densities by dividing the population by the area
for the us
272648000/9364520 = 29.115
for romania
22609000/237391 = 95.2394994
for ghana
18339000/237533 = 77.2061145
this means that the us has the lowest population density
this also means that romania has the highest population density
