Historically a slave station was the collection and transfer location utilized in the slave trade for handling human slaves. One famous slave station, on Goree Island is now a museum in Senegal.
In telecommunications, the term slave station, or subordinate station, has the following meanings:
In a datanetwork, a station that is selected and controlled by a master station. Usually a slave station can only call, or be called by, a master station.
In navigation systems using precise time dissemination, a station having a clock is synchronized by a remote master station.
As the population of the free States began to outstrip the population of the slaveStates, leading to control of the House of Representatives by free states, the Senate became the preoccupation of Slavestate politicians, interested in maintaining a Congressional veto over federal policy in regard to slavery.
In 1854, the Missouri Compromise of 1820 was repealed, and an effort was initiated to organize Kansas, as a Slavestate.
The free states of the United States existed in opposition to the slavestates prior to the American Civil War.
The Northeastern and Mid-Atlantic States, including Massachusetts, New York, Pennsylvania and New Jersey, had legally sanctioned slavery in the 17th, 18th and even part of the 19th centuries, but in the generation or two before the American Civil War, almost all slaves had been emancipated through a series of statutes.
Because this region was entirely slave free from its inception, and separated by the Ohio River from the South, which was pushing an expansion of legal slavery into the West, the concept of "free states" developed in constrast to "slavestates".