How, according to the passage, did African countries transform themselves from unattractive to popular tourist destinations?

In the passage, it is said that “However, many African countries that have previously been considered unattractive tourist destinations due to political instability, violence, or health crises have already managed to transform their images through successful tourism campaigns: For example, Rwanda features its population of endangered mountain gorillas, Mozambique its beaches, and Ethiopia its ancient cultural attractions from the Abyssinian period. It remains to be seen, though, whether these countries will experience the expected economic boon from tourism in the coming years, as has been the case in Mauritius.”