15:14The Old Names Of European Countries (& Why They Changed)
Save referenceCuriosity Gap
Bohemia sounds like a style or a song, not a country, so seeing it crossed out for Czechia is a small surprise. The thumbnail shows one change and asks 'why?'. The title promises the reasons, and 'Countries' tells you this is one of many.
Adding 'Why They Changed' turns a list of names into a set of stories, and 'European' keeps the countries familiar enough that viewers feel they should already know.
A red crossed-out shape and a yellow ticked one on a dark grid make the change readable at a glance, with 'why?' sitting under the arrow between them.
If your topic is a list of changes, lead the thumbnail with the one example viewers won't know, old on the left crossed out and new on the right. Put 'why' on the arrow and the rest in the title.
Show one surprising change and ask why.
Apply this pattern to your next video.
Bring the reference into a packaging brief, then decide what your title and thumbnail should each communicate.