Background information: The following excerpt is from a resolution from the Samara peasant assembly in March 1917. How do the peasants in Samara want to resolve the land issue? They want the land taken away from the peasants and given to farmers. They want the land taken away from the wealthy landowners and given to peasants. They want the land in the hands of the government and distributed to the people. They want land sold to the highest bidder, regardless of social status.

The way in which the peasants in Samara want to resolve the land issue is:

This refers to a person who is the owner of many lands and has made some money based on his investments on the pieces of land

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With this in mind and from the complete text, we can see that there is a narration about the Samara peasants who called for an assembly in 1917 amd wanted lands to be taken off wealthy owners and given to the peasants.

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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