Besides France or any French colonies, what countries have used the guillotine?
According to the link below, the guillotine was used in Belgium, Germany, Austria, Greece, Switzerland and Sweden (as well as Algeria and Vietnam, which were once French colonies). A primitive form of guillotine known as the maiden (not to be confused with the iron maiden) was used in Scotland long before Doctor Guillotin’s machine appeared in France. The use of the guillotine by the Nazis in Germany and Austria is well documented: I haven’t checked out the other countries mentioned on the webpage.