In 1826, which of the southeastern indians was the first to establish a constitutional government?
a) choctaw
b) creek
c) chickasaw
d) cherokee

C. Chickasaw Indians were the first to establish a constitutional government.

D) Cherokee

Explanation:

Around 1820 Sequoyah, whom was a Cherokke leader, created a written code for the Cherokee people. This new written lenguage allowed the Cherokee Nation to write a draft of a Cherokke Constitution based on the US Constitution itself. This Constitution was adopted around 1827 and also allowed the publishing of the first Native American newspaper in 1828.

someone or something lol