What were two earlier names of the region that became the Safavid Empire?

where is the section with the question?

the answer is a. laws were enacted in the aftermath of the plot to make it harder to free slaves,increasing sectionalism

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

jewish people sniffed up all of the money, thus making it hard for society