An autoimmune etiology also is demonstrated by the occurrence of a Sjoegren-sjÃ¶gren type syndrome after allogenic bone marrow. Transplantation a selective defect in-aquaporin 5 is thought to contribute to decreased lacrimation and dry eyes in patients WITH. ss
There are two countries in Africa which are considered by some scholars to never have been colonized: Liberia and Ethiopia. The truth, however, is much more complex and open to debate. What Does Colonization Mean? The process of colonization is basically the discovery, conquest, and settlement of one political body over another.
Africa, Portugal. Portuguese trading stations in West Africa and the slave trade. Portuguese expansion into Africa began with the desire of King John I to gain access to the gold-producing areas of West Africa.ortuguese trading stations in East Africa and the Slave trade. A map drawn in Spain dated 1375, showing the king of Mali holding a gold nugget. Source: British Library. Well-established gold and ivory trade network existed between African kingdoms in the interior and cities on the east coast of Africa.