I just wanted to point out that when East Timor had it’s independence referendum violence broke out, and I was part of a peacekeeping force sent to the new country. In a way, I had a very tiny part in the birth of a country.
Burkina Faso was a French colony named Haute Volta, known to the English speaking world as Upper Volta. It was renamed by one of its presidents after becoming an independent nation. I’ve always liked the name of its capital, Ouagadougou (oo-ah-ga-doo’-goo, more or less).
Using that list I make it 87 countries that have had their first acquisition of sovereignty since I was born. I must say, I am surprised it is so many. Furthermore, that’s not counting many places such as the Baltic states and some of the components of former Yugoslavia that were originally sovereign long ago, then conquered or absorbed as part of some lager sovereign entity, and then, more recently, within my lifetime, became independent and sovereign again. There must be quite a few of those too (especially as I see things on that Wiki list such as Iraq having regained sovereignty from the USA in 2004). I am not going to list either group.