commonly used in the United States of America to represent a
hierarchical relationship between city and state or country
("Evacuation Day in Suffolk County, Massachusetts"), but it was also
being abused to enumerate unrelated places ("Independence Day in
Albania, Mauritania").
Remove the list of countries observing All Souls' Day. This is a
widely observed holiday, and the list only included South American
contries.
There's more to do here; the list is rather patchy.