Final answer:
The Horn of Africa is composed of Ethiopia, Somalia, and a few other countries. It is located in East Africa and has a rich history with ancient civilizations and vibrant trade routes.
Step-by-step explanation:
The Horn of Africa is the region consisting of Ethiopia, Somalia, and a few other countries that borders the Red Sea, Gulf of Aden, and Indian Ocean. Geographically, it is located in East Africa and comprises the countries of Djibouti, Eritrea, and parts of Sudan and South Sudan. The region has a rich history, with ancient civilizations like the Kingdom of Aksum and vibrant trade routes in the Indian Ocean.