First, it is important to clarify that the term `Anglo` is not conventionally used to refer to a specific country but is typically used to describe people of English descent. Assuming it is a typographical error and it refers to `Angola`, the dissection of options would be as follows:

Option 1: Incorrect. While Angola (assumed correction of `Anglo`) has experienced civil war, this option suggests that it is the only country among the given ones which has undergone such conflict.

Option 2: Incorrect. Although both Colombia and Congo have indeed been afflicted by civil wars, this option ignores the cases of Sudan and Angola.

Option 3: Incorrect. While Sudan has suffered from civil war, this option neglects the other three countries which have also faced similar conflicts.

Option 4: Correct. All four countries - Angola, Colombia, Congo, and Sudan - have been impacted by civil wars at various points in their histories, making this the most inclusive and accurate answer.