State nullification is the idea that the states can and must refuse to enforce unconstitutional federal laws.
Whitney's cotton gin created an easy way to pick the seed from the cotton. Once this was possible cotton became a cash crop and it was necessary to be picked far more to keep up with the ability to de-seed it. This in turn led to the need of more people (slaves) to pick the cotton.
They believed it caused Denmark Vessey to plan a slave revolt.(novanet)
NovaNet ANSWER: Northern industrialists
He vetoed legislation to restore the national bank.
They threatened to separate slaves from their family members. Overseers also often used physical violence on disobedient slaves.
women were supposed to influence their husbands and raise patriotic children
to encourage migration and free blacks to africa
In response to the Supreme Court's ruling in Worcester v Georgia that Georgia had no right to interfere with the Cherokee, President Jackson disregarded the decision and removal of the Cherokee proceeded as planned.