In the decades before the Civil War, the northern states O refused to follow federal law requiring the return of fugitive slaves.
O financed industrial development with money earned in the trade of cotton produced by slave labor.
O were unaffected by slavery.
O refused to do business with the slave states.
O boycotted all American cotton because it was produced by slave labor.

A person who rules for life or by hereditary right: MonarchTo change or improve something by correcting faults or removing abuses: ReformA secular intellectual and cultural movement based on ancient Greek and Roman philosophy: HumanismInformation or learning based on actual observation and experiment: EmpiricalPolitical system whose ruler is unchecked and absolute: AbsolutismAnything that is not spiritual or religious in nature: Secular

Explanation:

A person who rules due to hereditary right is a monarch. This is a synonym of king. Rulers such as monarch can sometimes govern within the political system of absolutism, in which they have total power.

The movement of humanism became prevalent in Europe after the Middle Ages. This way of thinking emphasized human questions as opposed to religious or supernatural ones. It led to a rise in secular art. It also motivated a reform in the church and the government. Finally, this movement led to the Scientific Revolution, which celebrated empirical knowledge as opposed to dogma.