None. Socialism (a classless stateless society based on production for use and democratic control) will have to be a worldwide system, as production and distribution under capitalism are already global. Socialism will have no countries or borders or passports.
There are no socialist countries in Europe.
As of now, two countries often described as socialist are Cuba and North Korea. These countries have economies and governments that prioritize socialist principles such as state ownership of key industries, centralized planning, and social welfare programs.
The term "2nd world" typically refers to the former communist/socialist countries in Eastern Europe and the Soviet Union. Latin American countries are usually classified as "developing" or "emerging" economies, and are not typically referred to as "2nd world".
There are no European countries that are completely socialist.
the state provides many social services
There are no socialist countries in Europe.
Socialist countries are also capitalist countries. The two are not mutually exclusive.
Spain, Greece, Slovenia, Austria & Cyprus are the most Left Led Countries but are not truly socialist.
Socialist This is about the only alternative to "communist" because basically, communism is complete socialism.
the state provides many social services
Russia primarily, and many smaller countries
Perhaps the most socialist of the labor unions is the Industrial Workers of the World, the IWW.