Botswana dwarfs Europe: about 580,622 km² km² against 10,180,000 km² km². At true size Botswana is about 17.5× larger — the whole of Europe fits into Botswana roughly 17 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 17× into Europe.