What factors were primary motivations for garrison in establishing the liberator in boston?

Abolition of slavery, emancipation of all slaves and woman's rights were primary motivations for establishing The Liberator.
The Liberator was an American newspaper founded by William Lloyd Garrison (1805 – 1879) and Isaac Knapp in 1831 in Boston. Newspaper was published for 35 years.

according to this text from the preamble to the declaration, who gives men their unalienable rights?

their creator