Which literary work was written for the purposes of providing information about Native American customs and language

A Key into the Language of America

Explanation:

This book written by Roger Williams who was a Puritan Minister and author. It was first published in 1643 and it described the American Indian languages in New England.

In this book he enthusiastically praised some elements of Indian culture as superior to European culture. At the end of each chapter in the book, he he wrote a complementary poem.