Who were the info-europians?

Answer 1

I think you mean the indo-Europeans. The term 'Indo-European' refers in most cases to a group of languages with common linguistical roots, not so much to people. There are some 450 languages today with Indo-European roots, European languages like English, Spanish, German and Russian just being four of them. Almost half the people on this planet speak an Indo-European language. The "Indo"-part of the name is caused by the fact that several eastern languages, notably Indian and Iranian dialects and languages, have the same roots as most European languages.