Tier 3 countries list
It's important to note that the concept of "tier 3 countries" isn't a standard classification in geopolitics or economics. However, if you're referring to countries that are typically classified as developing or less economically developed, here's a list of 20 countries based on various indicators such as GDP per capita, Human Development Index (HDI), and other socio-economic factors:
1. Afghanistan
2. Burkina Faso
3. Burundi
4. Central African Republic
5. Chad
6. Democratic Republic of the Congo
7. Eritrea
8. Guinea
9. Guinea-Bissau
10. Haiti
11. Liberia
12. Madagascar
13. Malawi
14. Mozambique
15. Niger
16. Sierra Leone
17. Somalia
18. South Sudan
19. Sudan
20. Yemen
Please note that the categorization of countries into tiers can vary depending on the criteria used and can change over time due to economic, political, and social developments. This list is not exhaustive, and there are other countries facing similar developmental challenges.