critical points of 19th century British nationalism, industrialism ,and economic benefits in Africa

I am a school teacher gathering information about British imperialism and its political and, economical, and social pros and cons in Africa. I need 6 page essay describing how the British displayed dominance in the areas of industry, economics, socially and nationalism on the African continent. Express how they Ruled over areas such as Kenya and south Africa. Was there any military force used or diplomacy? Was there slave labor or cheap labor? Did the British use Association or Assimilation in these areas? Were these areas used for the raw natural resources or as a new consumer base?