original passage: Because it is resistant to corrosion, nickel was occasionally used as a substitute for decorative silver. Nickel was also occasionally used in some countries after 1859 as a cheap coinage metal (see above), but in the later years of the 20th century, it was replaced by cheaper stainless steel (i.e. iron) alloys, except in the United States and Canada.
original sentence: iron) alloys, except in the United States and Canada.
sentence2: Does it sound like the USA and Canada have a relative abundance of nickel ore in their respective territories, as compared to other nations which found iron to be a more convenient source of metal for coins?
sentence1: Because it is resistant to corrosion, nickel was occasionally used as a substitute for decorative silver. Nickel was also occasionally used in some countries after 1859 as a cheap coinage metal (see above), but in the later years of the 20th century, it was replaced by cheaper stainless steel (which is an alloy of iron), in most places, with the USA and Canada being notable exceptions.