to free (somebody or something) from restraint or control, esp from slavery or from restrictions imposed by society or law
to free (somebody) from slavery
emancipation /-ʹpaysh(ə)n/ noun
emancipator noun
emancipatory /-pətri/ adj
[Latin emancipatus, past part. of emancipare, from ex-1 + mancipare to transfer ownership of, from mancip-, manceps purchaser]