What foreign policy did the USSR have as a result of the idea of the world revolution?

Although the emphasis and ranking of priorities were subject to change, two basic goals of Soviet foreign policy remained constant: national security (safeguarding Communist Party rule through internal control and the maintenance of adequate military forces) and, since the late 1940s, influence over Eastern Europe.

Explanation:

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