Kant´s moral theory - influenced by the French Enlightenment Rationalism is based on the central idea that the only intrinsically good thing is a good will which is subject to the moral law.
The Categorical Imperative is his construction of moral law, following the principle of universalizability (applied to all people) and that of humanity - never treat other humans as a means to an and. It is therefore not surprising that Feminism used this part of Kantian Perspective on Ethics to condemn certain practices regarding women, because they treat women as means.
This act helped recently freed African Americans get on their feet after a lifetime of slavery by providing them with a portion of land to cultivate as their own.