How were the mensheviks different from the bolsheviks?

The Mesheviks and the Bolsheviks were two totally different movements in Russia from ideological perspective and their actions. The Mesheviks wanted a gradual, peaceful change in the country, with progressive methods used, and by including the Middle class in the process, with the end goal being modernization of the country. The Bolsheviks, on the other side, wanted radical changes, and that was supposed to be done by the elites, not by the middle class people. Also, instead of modernizing the country, the Bolshevkis wanted to establish communism in the country.

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