There is an economic cooperation among European Union members. Some economic help is given to the poorest or least developed members, which is one of the main reasons or incentive for Eastern European countries, or Turkey, to apply for membership.
The members contributing the most (on a economic viewpoint) are reluctant to stretch even more their obligations towards newcomers. Some countries which are now getting aid from the union, would also become contributors.
Also at stake is the political power within the Union; some new members, like Poland, are eager to get a more favourable position.
Yugoslavia
by being cool
The former USSR, headed by Russia, were communist countries. Most of the outlying territories were taken by force and unwillingly converted to communist governments.
true
change and self-determination
because they know the membership will help them economically and politically.
change and self-determination
true
true
true
Probably, the former USSR and Communist Chinese have litterly "dumped" them onto third world nations (un-developed nations) in order to gain favortism.
Its between poor and rich: Slovakia is a high-income advanced economy with one of the fastest growth rates in the EU. The country joined the European Union in 2004 and the Eurozone on January 1, 2009. Slovakia together with Slovenia are the only former Communist nations to be part of the European Union, Eurozone, Schengen Area and NATO simultaneously.