Which excerpt best reflects the central idea of the “official symbolism” excerpt from the iroquois constitution?

Five strings of shell tied together as one shall represent the Five Nations. Each string shall represent one territory and the whole a completely united territory known as the Five Nations Confederate territory.

Explanation:

A large bunch of shell strings, in the making of which the Five Nations Confederate Lords have equally contributed, shall symbolize the completeness of the union and certify the pledge of the nations represented by the Confederate Lords of the Mohawk, the Oneida, the Onondaga, the Cayuga and the Senecca, that all are united and formed into one body or union called the Union of the Great Law, which they have established.

taking into account that a theme is the central topic a text treats and can be developed through a story, play, poem etc. the following are themes that can be further developed:  

my best friend jeffrey has many unusual interests. (the story could be about each of the unususal interests)

once a man gives his soul over to evil, he can never go back. (this could be a saying or a proverb)

the three sheepdogs lay around the yard all day. (it could be developed detailing how each of these sheepdogs lay around)

a priest's collar has an unusual effect upon people. (it could be developed detailing the different effect upon people)

innocence is a powerful force in a world full of corruption. (it could be developed detailing how is a world full of corruption)

king lear is a play shakespeare wrote later. (it is just a sentence and doesnt give any idea or topic to be discussed in details.

evil often wears the disguise of innocence. (this could be a saying or a proverb)

exhausted word best describes the mood of the passage frink creates .