2how were the people who lived before 1800 different from those who lived after 1800 ?
e. they had greater concern for hygiene .
g. they had less protection against diseases .
h. they had more defenses against climatic changes .
i. they had more access to vaccinations against diseases .

electricity

so thats all folks

silk

indigo  

rice

all the other answers are wrong

i also think he is correct. i believe they came to washington to protest their rights.

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