Burma -> Myanmar
A year after thousands were killed in the suppression of a popular uprising, the country of Burma changed its name to Myanmar. This happened in 1989. The military government had wanted to change the name to “Myanma” as that is how it was written in the local language. This was a controversial decision and many people disagreed with it. Because of this, many parts of the world still refer to the country as Burma.
https://en.wikipedia.org/wiki/Netherlands
#1 also in Germany we still call it "Holland", this name was never really taken away from them.
#4 well, the more important thing that happened was 1993 when Czechoslovakia separated into Czechia and Slovakia.
Too many times, incorrect names are applied to places for the sake of a foreigner's convenience. eg Munich and Cologne are not the names of the places.....