The European Union began a particularly dynamic phase of its development in the mid-1980s when it launched the 1992 programme and ratified the Single European Act (SEA) in 1987.
Chuir an tAontas Eorpach tús le céim fhiorfhuinniúil dá fhorbairt i lar na 1980Í le seoladh chlár 1992 agus le daingniú na hlonstraime Eorpaí Aonair (IEA) i 1987.