Algeria dwarfs Canada: about 2,322,788 km² km² against 9,872,102 km² km². At true size Algeria is about 4.3× larger — the whole of Canada fits into Algeria roughly 4 times.
Algeria sits in Africa, Canada in North America. On the old Mercator map the latitude gap distorted how large each felt beside the other; at true size the answer is simply 4.3×.
The old map muddied it further: Mercator inflates Algeria about 1.3× and Canada about 4.1×, so on a Mercator-style map this pair appears 13.6× apart instead of the true 4.3×.
Algeria fits 4× into Canada.