David Birmingham 
Trade and Empire in the Atlantic 1400-1600 [PDF ebook] 

Trade and Empire in the Atlantic 1400-1600 provides an accessible and concise introduction to European expansion overseas during the early modern period. It explains why and how seafarers visited the Caribbean, South America and Africa, and looks at the history of the communities that lived around the ocean as they responded to the challenges and opportunities which sea trade opened for them.
Historical thinking on the subject of Empire is naturally controversial as is shown by this survey of the first four stages of early Atlantic colonisation from the conquest of the Canary Islands to the creation of slave plantations in Brazil. This history of the Atlantic Empires is an authoritative introduction to an essential topic in world history.