Is this correct please tell me

Sientes o why did plains indians lose their battle to keep their land and their way of life? a the number of buffalo decreased b indians were outnumbered by whites. c whites had more advanced military technology. o all of the above

How did the us change it’s economy to provide supplies for the war effort?

Pls me! the black codes were various state laws in the south concerning african-americans which of the following statements about the black codes is not accurate. a. the black codes protected the civil rights of african-americans. b. african americans who cannot afford to pay a fine could be jailed and then be hired out to anyway person who could pay the fine. c. some southern states passed laws that prohibited is african-americans from voting or serving on jury‘s. d. the black codes were designed to force african-americans into a condition of near slavery.