The countries that joined the federation typically refer to those that became members of a specific political or economic union, such as the United States or the Federation of Australia. In the case of the United States, the original 13 colonies became the first states, while additional states were admitted over time. In Australia, six states and two territories formed the federation in 1901. For a more precise answer, please specify which federation you're inquiring about.
Switzerland is a confederation (not a federation) of 26 semi-independent cantons. A canton is approximately the same as what is called a 'state' in English-speaking federal countries.
Lithuania
All colonies joined in Federation on the same date - 1 January 1901.
No new countries joined in 2002. Prior to that, the last countries to join joined in 1995. The next set of countries joined in 2004.
Actually, it was in 2004. The following countries joined the EU.CyprusCzech RepublicHungaryEstoniaLatviaLithuaniaMaltaPolandSloveniaSlovakia
he joined all the states and made it a whole federation .
13 countries have joined since 2002. Malta, Cyprus, Slovenia, Estonia, Latvia, Lithuania, Poland, the Czech Republic, Slovakia, and Hungary all joined in 2004. Romania and Bulgaria joined in 2007. Croatia joined in 2013.
Two countries joined in 1986. They were Spain and Portugal.
Russia
No new countries joined the European Union in 2005.
No countries joined the EU in 2008. 10 countries joined in 2004. See the related question below.
Only two countries joined in 1986. They were Spain and Portugal.