When did the word "socialization" come into our language and how? I'm thinking it's pretty recently...

1828, "to render social," from social (adj.). Meaning "to be sociable, to mingle" is recorded from 1895. Socialization "process of making social" is from 1840.

http://www.etymonline.com/index.php?term=socialize

http://dictionary.reference.com/search?q=socialize&r=66