Journals, captains' diaries, ships' logs, letters to financial backers are examples of which kind of literature?

Answer: Literature of Exploration.

Explanation:

Journals, captains' diaries, ships' logs and similar elements are all valuable sources used to explore the past. These textual documents belonged to people from the past and were written by them, hence they are considered as cultural and historic treasure. As these elements fall under the category of written material, they are referred to as a specific type of literature - literature of exploration. The American Enlightenment is a specific period in American history which took place during the 17th and 18th century, and led to the American Revolution. Revolutionary writing refers to all the works of literature created specifically during the period of the American Revolution (1765-1783). Puritan literature is related to the Puritan movement, which aimed to reform the Church of England.