Complex sentence: At, Sweden is the third-largest country in the European Union by area, but, with a total population of 10.0 million, it has a low population density of; the highest concentration is in the southern half of the country.
Split into simpler sentences: At, Sweden is the third-largest country in the European Union by area, with a total population of 10.0 million. Sweden consequently has a low population density of, with the highest concentration in the southern half of the country.