Botswana dwarfs South America: about 580,622 km² km² against 17,840,000 km² km². At true size Botswana is about 30.7× larger — the whole of South America fits into Botswana roughly 30 times.
The old Mercator map treated both about equally (1.2× vs 1× inflation), so at least their relative sizes were preserved — even if both were drawn at the wrong absolute scale.
Botswana fits 30× into South America.