Rank
Country Region
GNI per capita
1 Timor-Leste () South-East Asia *400
2 Malawi Eastern Africa 596
3 Somalia Eastern Africa *600
4 Democratic Republic of the Congo Middle Africa 675
5 Tanzania Eastern Africa 720
6 Yemen Middle East 745
7 Burundi Eastern Africa 753
8 Afghanistan Central Asia *800
9 Guinea-Bissau Western Africa 856
10 Ethiopia Eastern Africa 859
11 Niger Western Africa 896
12 Liberia Western Africa *900
13 Sierra Leone Western Africa 901
14 Madagascar Eastern Africa 911
15 Zambia Eastern Africa 911
16 Eritrea Eastern Africa 917

google: war in Timor-Leste. Indonesia invades in 1975
google: war in Malawi. 2015 border dispute over lake of Malawi against Tanzania.
google: war in Somalia. Civil war ongoing since 2009.
google: war in Democratic Republic of Congo. The second Congo War '98-2003.
google: war in Tanzania: Ungandian-Tanzanian war 1979.
google: war in Yemen: LOL not even gonna

Go ahead, do it for yourself.