All this data is potentially out of date, and should be taken with a truckload of salt
The Minmatar Rebellion was a successful slave revolt that occurred in 23216 AD, in the midst of the Amarr-Jove War. Its greatest (or most notorious) result was that the Minmatar successfully rebelled against their Amarr masters and ejected them from the space that would become the Minmatar Republic.
The sudden uprising also led the Amarr to hastily make peace with the Jove, and to allow the Order of St. Tetrimon to return to the Empire in order to help battle the Minmatar rebels. The Order's uniquely colored ships were feared by the Republic commanders.