What are the political government of the mound builders

The elite class controlled government and religion; they were the ruling class. The common class was the food producers and the labor force used to build the mounds. The Moundbuilder culture began to decline after European contact due to disease and warfare with neighboring peoples.

Moundbuilder society was divided into two groups. The elite class controlled government and religion; they were the ruling class. The common class was the food producers and the labor force used to build the mounds.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain

that would be the steamboat because none of the other things are forms of transportation