If looking for where to start flying first look at where there is a lot of cross border cooperation
No matter how much blm flying to former colonies is still a stable revenue stream and among the most recession and CoVid19 proof among international passenger air-transport business you can do. The first to come back and get was flying between Portugal and its former colonies in South America. It actually hardly stopped. There are still a lot of connection between European states and their former colonies. And the later they where freed the more. It don't seem like resentment is the lingering frame of mind but more a continued sense of responsibility. Look at Britain and its consideration of offering immigration to all of its former colony Hong Kong residents. I mean the UK is keeping many of them in a continued cooperation arrangement even through sporting games. There seem to also be a certain amount of continuing business and trade between such constellations, resulting in non tourist traffic that are allowed also in a time of crisis. A lot of overseas students also travel t...