Why were enslavers less likely to liberate enslaved african americans after the year 1808?
select the best answer from the choices provided.
a.
future generations of enslavers were greedier than earlier ones.
b.
state lawmakers banned enslavers from freeing enslaved people.
c.
northerners would no longer allow free african americans into their states.
d.
the british and later the united states banned the importation of new enslaved africans, making them more valuable.