An objective of the European Union (EU) for the
early 21st century is to
(1) withdraw from its military alliances
(2) further integrate its economic system
(3) establish a nuclear buffer zone
(4) limit production of alternative fuels

Respuesta :

An objective of the European Union (EU) for the early 21st century is to "(2) further integrate its economic system" which has proven to be one of the most difficult tasks.