How could free african americans their enslaved contemporaries?

select the best answer from the choices provided.
a.
they could participate in the underground railroad.
b.
they could support abolitionist politicians.
c.
they could subscribe to the liberator.
d.
all answers are correct.

ba geologist finds four sedimentary rock she determines that no geologic events have shifted the layers she labeles them a,b,c,dbfrom top to bottom

australian plates collided into eurasian plates, and the himalayas formed. the andes mountain range the himalayas and the islands of japan form differently. the andes mountain range formed at the convergent boundary of an oceanic plate and continental plate.

the answer should be a. the sui empire, the tang empire extended from korea in the west to manchuria in the east.

a. always outside of government control.