2. Based on the excerpt, the most likely purpose of Dickinson's letters was to A enlightenment rhetoric to encourage American autonomy
B support efforts to claim the French territory of Louisiana
C argue for increased industrial production in the colonies
D call for immediate end of the international slave trade

A. use enlightenment rhetoric to encourage American autonomy

More difference.

Explanation:

Mayan government structure was different as compared to the Song Dynasty  because Mayan government consist of city-states that govern independently and there is no centralized government while there is a centralized government present in Song Dynasty. Mayan government has no regular army while Song Dynasty has a strong military force.

One similarity is also present between Mayan government and Song Dynasty such as both were ruled by the kings (monarchy).