- The World Factbook
The World Factbook provides basic intelligence on the history, people, government, economy, energy, geography, environment, communications, transportation, military, terrorism, and transnational issues for 265 world entities.
- Bantu-speaking people settled in the area now called Angola in 6th century A.D.; by the 10th century various Bantu groups had established kingdoms, of which Kongo became the most powerful. From the late-14th to the mid-19th century, a Kingdom of Kongo stretched across central Africa from present-day northern Angola into the current Congo republics.
- Gulf (Wikipedia)
A gulf is a large inlet from an ocean into a landmass, typically (though not always) with a narrower opening than a bay. The term was used traditionally for large, highly indented navigable bodies of salt water that are enclosed by the coastline. Many gulfs are major shipping areas, such as the Persian Gulf, Gulf of Mexico, Gulf of Finland, and Gulf of Aden.