True, so you show territory changes with borders between 1871 and 1914?
Because never forget, it was right to take Elsass-Lothringen, 92% of it was settled by Germans, France annexed it in the 17th century. Before especially Strassburg was an important german university city.
All Finnish cities have Swedish names because those are the names that they were known as to the outside world before WW1. It was only after their independence that they started using the Finnish names internationally.
You know he kinda covers these already... Look at the Balkans for instance: The lighter-coloured areas represent areas annexed there, with the date of annexation being given as well.
The only area where something is missing is the Middle East, with some minor border changes between the Ottomans and Persia being omitted and the Russo-Turkish War (1877-78) being taken for granted (Kars was only annexed in 1878, which means it should be shown as a Russian addition as well).