Most americans who opposed the ku klux klan embraced what notion?
a. that the races should remain separate
b. that american was a "melting pot"
c. that immigrants should be deported
d. that david stephenson should be elected president

which time period is this? or is this story fictional, i'm going to need more info to answer this question

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