What new material was created during the second industrial revolution?

a: electricity

b: steel

c: iron

d: plastic

(i think it's c or a)

hello your answer is

china and usa

.

k'joiughv mn/.

select all that apply.

walter cronkite's special interview from vietnam had which of these effects? oijohkn

expla? ;

lkm, /> ; lkjhnb mnation:

what are the choices?