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.
he joined all the states and made it a whole federation .
Actually, it was in 2004. The following countries joined the EU.CyprusCzech RepublicHungaryEstoniaLatviaLithuaniaMaltaPolandSloveniaSlovakia
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.
All India Football Federation affiliated in FIFA in 1948.