How did the massachusetts slave elizabeth freeman (mum bett) gain her freedom in 1781? ?

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.

19th amendment granted women the right to vote. the 19th amendment guarantees all american women the right to vote.