Eureka Classis
On June 7, 1911, seven ministers and sixteen congregations organized to form the Eureka Classis. The name of the Classis came from the Greek word ‘eureka’ which means ‘I found it’ and not on the town Eureka, South Dakota, where the second meeting of the Classis would be held. The name was designed to mean that they had found a solution to their doctrinal problems with the rest of the denomination.
ETA (separatist group)
ETA grew out of a student group called Ekin, founded in the early 1950s, which published a magazine and undertook direct action. ETA was founded on 31 July 1959 as Euskadi Ta Askatasuna (Basque Homeland and Freedom) by students frustrated by the moderate stance of the Basque Nationalist Party. (Originally, the name for the organisation used the word "Aberri" instead of "Euskadi", creating the acronym "ATA". However, in some Basque dialects, "ata" means "duck", so the name was changed.)