1. The Indo-European languages are a family of related languages that today are widely spoken in the Americas, Europe, and also Western and Southern Asia.
1.1. Formed by some branches of the Language Revolution
1.1.1. Anatolian
1.1.2. This branch of languages was predominant in the Asian portion of Turkey and some areas in northern Syria.
1.1.3. Indo-Iranian
1.1.3.1. This branch in cludes two sub-branches:Indic and Iranian. Today these languages are predominant in India, Pakistan, Iran, and its vicinity and also in areas from the Black Sea to western China.
1.1.3.2. Greek
1.1.3.2.1. Greek is a group of dialects.
1.1.3.2.2. Italic
1.1.3.2.3. This branch was predominant in the Italian peninsula.
1.1.3.3. Celtic
1.1.3.4. Thi sbranch contains two sub-branches: Continental Celtic and Insular Celtic.
1.1.3.5. Germanic
1.1.3.6. Divided in three sub-branches: East Germanic, currently extinct; NorthGermanic.
1.1.3.7. Armenian
1.1.3.8. The Persian domination had astrong linguistic impact on Armenian, it is believed that Armenian actually belonged to the Iranian group.
1.1.3.9. Tocharian
1.1.3.10. This branch is completely extinct. Among all ancient Indo-European languages, Tocharian was spoken farthest to the east.
1.1.3.11. Balto-Slavic
1.1.3.12. This branch contains two sub-branches: Baltic and Slavic.
1.1.3.13. Albanian
1.1.3.14. Albanian is the last branch of Indo-European languages to appear in written form. Today Albanian is spoken in Albania as the official language, in several other areas in of the former Yugoslavia and also in small enclaves in southern Italy, Greece and the Republic of Macedonia.
2. Definition
2.1. Concept 2.0
2.1.1. It is highly probable that the earliest speakers of this language originally lived around Ukraine and neighboring regions in the Caucasus and Southern Russia, then spread to most of the rest of Europe and later down into India.