Which term describes an era when new ideas in physics, astronomy, biology, human anatomy, chemistry, and other sciences led to a rejection of superstitions and beliefs that had existed since ancient times?

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

men and women were able to be citizens, but women did not have all of the rights of men including voting and holding office. slaves could be if they were freed.