Answer:
1- Horn of Africa.
2- Seychelles.
3- Algeria.
4- Cairo, Egypt.
Step-by-step explanation:
1- The Horn of Africa is the eastern tip of mainland Africa, where the Red Sea empties into the Indian Ocean, where the nations of Ethiopia, Somalia, Eritrea, and Djibouti are located.
2- The Seychelles is the smallest country in Africa, with a size of 459 square km. The country scores the highest on the development index (HDI) of all countries on this continent, but at the same time has the highest inequality of income.
3- With a size of 2,381,741 km², Algeria is the largest country in Africa in terms of area.
4- Cairo is the capital of Egypt and consists of the governorates of Cairo and Giza. The city has about 20 million inhabitants. However, the unofficial population of Cairo is much higher, partly due to the high number of illegal immigrants in the city. With about 20 million inhabitants, the entire metropolitan region of Cairo is the largest city in Africa and the Middle East and one of the largest cities in the world. The city is also one of the most polluted cities in the world and has a huge traffic chaos.