Republic of the Congo                                                        
The capital, Brazzaville, is located on the Congo River, in the south of the country, immediately across from Kinshasa, the capital of the Democratic Republic of the Congo.
The southwest of the country is a coastal plain for which the primary drainage is the Kouilou-Niari River; the interior of the country consists of a central plateau between two basins to the south and north. Forests are under increasing exploitation pressure. Since the country is located on the Equator, the climate is consistent year-round, with the average day temperature being a humid 24 °C (75 °F) and nights generally between 16 °C (61 °F) and 21 °C (70 °F). The average yearly rainfall ranges from 1,100 millimetres (43 in) in south in the Niari valley to over 2,000 millimetres (79 in) in central parts of the country. The dry season is from June to August while in the majority of the country the wet season has two rainfall maxima: one in March–May and another in September–November.

In 2006–07, researchers from the Wildlife Conservation Society studied gorillas in heavily forested regions centered on the Ouesso district of the Sangha Region. They suggest a population on the order of 125,000 Western Lowland Gorillas, whose isolation from humans has been largely preserved by inhospitable swamps.   ( Reference to Wikipedia )

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Republic of the Congo  -  Pygmies                                         
Many Pygmies in Congo live in precarious conditions, to which UNICEF and human-rights activists have voiced their concerns On the 30th December 2010, the Congolese parliament adopted a law for the promotion and protection of the rights of indigenous peoples. This law is the first of its kind in Africa, and its adoption is a historic development for indigenous peoples on the continent.

Brazzaville    (and largest city)  
Official language(s)
-  French
Recognised regional languages
-  Kongo/Kituba, Lingala
-  Congolese
-  Presidential republic 
-  President Denis Sassou Nguesso
-  From France August 15, 1960 
-  Total 342,000 km2 (64th)  132,047 sq mi  
-  Water (%) 3.3
-  2009 estimate 3,686,000  (128th) 
-  Density 10.8/km2 (204th)   27.9/sq mi
GDP (PPP) 2010 estimate 
-  Total $17.108 billion  
-  Per capita $4,426 
GDP (nominal) 2010 estimate 
-  Total $11.530 billion 
-  Per capita $2,983 
-  Central African CFA franc (XAF)
Time zone
-  WAT (UTC+1)
-  On the right
ISO 3166 code
-  CG
Internet TLD
-  .cg
Calling code
-  242 
( Reference to Wikipedia )       

More Country Information from Foreign & Commonwealth Office.