What is the role of Sumer, including the products and resources that were part of the trade ?

Not sure how you wanted this answered but I tried my best!

Explanation:

It was a ancient civilization known for their governance, changes in language, and their architecture. They were also well-traveled trade merchants and since their home land lacked goods such as stone, minerals, and timber they were forced to create one of History's earliest trade networks over land and sea.

they all focused on themes about the inevitability of death.

the old way of life was represented by superstition, an angry god, and absolute submission to authority. the thinkers of the age of reason ushered in a new way of thinking. this new way championed the accomplishments of humankind. individuals did not have to accept despair. science and reason could bring happiness and progress. kings did not rule by divine right. they had an obligation to their subjects. europeans pondered the implications for nearly a century. americans put them into practice first.