A majority vote is the answer
Persians were kind to the people they conquered. They were the first to establish the charter for human rights; they also allowed the people they conquered to retain their religion, language, and even their costumes and ways of life. All of this allowed the Persians to create an peaceful empire in which the citizens respected and even embraced their conquerors.
Tokugawa Ieyasu's dynasty of shoguns presided over 250 years of peace and prosperity in Japan, including the rise of a new merchant class and increasing urbanization. To guard against external influence, they also worked to close off Japanese society from Westernizing influences, particularly Christianity.
Answer:
Yes, I think it was because you need to remember that they wanted to ultimately be joined to the U.S. By incorporating ideas from the U.S. Constitution, it would be a much easier integration into the U.S.