Consider the following countries : 1. Anglo 2. Colombia 3. Congo 4. Sudan Which of these countries has/have been suffering from civil war?

All four listed countries have experienced significant civil wars. Angola suffered a prolonged, large-scale civil war (commonly dated 1975–2002) rooted in post‑colonial rivalries and Cold War involvement [1]. Colombia has long faced an internal armed conflict involving guerrilla groups and state forces and is listed among major armed conflicts in modern records [2]. The Congo (Democratic Republic of the Congo) has endured repeated internal wars and ongoing violent insurgencies in the east [3], and Congo appears among country lists affected by conflict [4]. Sudan likewise features prominently among major internal conflicts, including long north–south civil wars and later Darfur and other internal conflicts [2]. Hence, all four countries have suffered civil wars.

Sources

1. [1] https://www.odu.edu/sites/default/files/documents/crisis-angola.pdf
2. [2] https://www.sipri.org/sites/default/files/SIPRIYB0101.pdf
3. [3] https://www.cfr.org/global-conflict-tracker/conflict/violence-democratic-republic-congo
4. [4] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Countries on Equator > p. 79