> I don’t know what I have to do with the czar.
He (all of them) was the guy who stubbornly refused to switch to Gregorian calendar. They also built a railroad of different width so that it would not be used by the invaders. There are places in modern Poland and Lithuania where trains for some time had to switch wheels back and forth going through areas that were formerly under Russia. Well, maybe we in America should not judge too harsh – as Mauritania being the other country still using imperial measures!