Angola

Why it sticks

1. 1

   The province of Cabinda is an exclave, cut off from the rest of Angola by a strip of DR Congo along the Congo River.

2. 2

   During the oil boom Luanda was repeatedly ranked the world's most expensive city for expatriates.

3. 3

   The red-and-black flag carries a half cogwheel and a machete with a star, a design echoing the hammer and sickle.

• Signs are in Portuguese, which separates it from French-speaking DR Congo and English-speaking Zambia and Namibia.
• The capital's minibus taxis (candongueiros) are Toyota Hiaces painted blue and white.
• Inland landscape is reddish soil with miombo woodland and high plateaus.