Question

what was the primary motivation for portuguese exploration along the african coast?
to map the african coastline for future trade routes to asia
to escape the poor soil and limited resources of portugal
to establish colonies and spread the portuguese language
to find a legendary christian kingdom and gain access to african wealth.

Explanation:

During the Age - of Exploration, Portuguese exploration along the African coast was driven by a combination of religious and economic motives. They hoped to find Prester John, a legendary Christian king, and also to gain access to African resources like gold. Mapping was a means rather than the primary goal. Escaping poor soil was not the main reason. While they did establish colonies, spreading the language was not the primary motivation.

Answer:

To find a legendary Christian kingdom and gain access to African wealth.