[Zetmolm]

Ada by Vladimir Nabokov

From Wikipedia:

The story takes place in the late nineteenth century on what appears to be an alternative history of Earth, which is there called Demonia or Antiterra. Antiterra has the same geography and a largely similar history to that of Earth, however it is crucially different at various points. For example, the United States includes all of the Americas (which were discovered by African navigators). But it was also settled extensively by Russians, so that (actual) western Canada is a Russian-speaking province called "Estoty", and eastern Canada a French-speaking province called "Canady." The three languages are all widespread in North America. Russia itself, and much of Asia, is part of an empire called Tartary, while the word "Russia" is simply a "quaint synonym" for Estoty. The British Empire, which includes most or all of Europe and Africa, is ruled (in the nineteenth century), by a King Victor. Aristocracy is still widespread, but some technology has advanced well into twentieth-century forms. Electricity, however, has been banned nearly since its discovery following an event referred to as "the L-disaster", so that airplanes and cars exist, but television and telephones do not, or are replaced with similar devices powered by water. The setting is thus a complex mixture of Russia and America in the nineteenth and twentieth centuries.