The Horn of Africa is a peninsula in Africa, the easternmost projection of the African continent. Below is an example of you a map for this region could display:
For this example we selected the map for Africa, added content to Djibouti, Ethiopia, Eritrea, Kenya, and Somalia and enabled the option to only display countries with active content, resulting in the above map.
Below is the map of Africa, with all countries, with only the horn of Africa countries highlighted.
The process is the same, but in the above map we didn’t enable the option to only display active countries and therefore the full continent displays.
The above examples can already be reproduced using the free version of the plugin.