What does it mean punctual???

punctual -  punc·tu·al

      -> being / doing on time

Examples:

[] The man was very punctual.

      -> The man was on time.

[] She was always punctual.

      -> She is always on time.

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

On time means that something happens or is done at the agreed-upon or suitable time.

The event did start with D. Slovenia and Croatia declared independence from the former Yugoslavia. but you could argue that it was also due to Serbia's dominance in Yugoslavia... the cause is as always, quite complex.