Democratic Republic of the Congo dwarfs North America: about 2,334,703 km² km² against 24,710,000 km² km². At true size Democratic Republic of the Congo is about 10.6× larger — the whole of North America fits into Democratic Republic of the Congo roughly 10 times.
The old Mercator map treated both about equally (1× vs 1× inflation), so at least their relative sizes were preserved — even if both were drawn at the wrong absolute scale.
Democratic Republic of the Congo fits 10× into North America.