In patients with chronic idiopathic urticaria, approximately 35% will experience episodes of angioedema and 25% are positive for dermatographism. Like many autoimmune diseases, chronic idiopathic urticaria has a higher incidence in women than men, with the reported ratio of females to males ranging from 2:1 to 4:1.
Best Answer: Many different tribes, the original slaves brought over by the Portuguese and sold to the Spanish came from the Congo and Angolan regions of central Africa, the Windward Coast and Senegambia to the north. When the British conquered Jamaica the slaves were set free and settled in the interior. They were known as the Maroons and guarded their freedom so fiercely that the British made treaties with them. Those brought in by the British came mostly from west Africa, the Gold Coast and Windward Coast. While some will have been from the local tribes (apparently kidnapping by unscrupulous traders was common) others will have been captives from raids into the interior.
Black slaves that were taken to America were mainly from the West African countries that have a coastline on the Atlantic ocean. In some cases slaves were captured from other countries that are further inland then sent away on boats from the coastal towns. Three countries where most slaves are known to have come from are Sierra Leone, Liberia and Ghana. Other slaves from East African countries like Mozambique, Tanzania and Congo were sent to Europe and Asia.