During the Roman times many groups of people fled into Europe to escape various hordes like the mongols and the huns, In most cases the Romans wouldn't let them into their land, and they owned all of western and central europe, so they would have to live on the border in eastern europe.
one of the oldest ethnic groups in Easter Europe is Albanians
Balts, Bulgars, and Romans.
There are hundreds of ethnic groups in Eastern Europe. The largest would have to be the Russians, the Ukrainians, the Romanians, the Greeks, and the Turks. Large immigrant ethnic groups would be such as Chinese, Afghani, Pakistani, and Indian.
It let the ethnic groups have there own independence and freedom
There are many opposing ethnic groups in Eastern Europe. Their feuding has led to many wars.
Baltic (Latvian, Lithuanian, Estonian) German.
Answer: Russians, Poles, Serbs, Ukrainians, Czechs, Bulgarians, and Slovaks.
Over 160 separate ethnic groups.
Every country in Europe has many ethnic groups. For example, in the United Kingdom you will find people of European descent, African descent, Asian descent, Middle Eastern descent, etc. You will find this in all European countries.
Largely due to ethnic and religious conflict. Eastern Europe has a large number of ethnic groups that often come into conflict. Lands that are predominantly Christian and lands that are predominantly Muslim also border each other here.
There are too many to name. There are hundreds of ethnic groups present in Europe, native alone. Some examples are English, Spanish, French, Italian, German, Swedish, Russian, Ukrainian, Greek, Polish, Serbian, Turkish, Sami, Basque, Corsican, and Sicilian.
That is correct. There are currently 28 nationalities in Eastern Europe, one for each country. All but Cyprus and Kosovo have their own language, which means there are 26 national languages in Eastern Europe. Eastern Europe is much more cultural than this however. People from all over the world, specifically Northern Africa and the Middle East have come to Eastern Europe, mainly because the distance is so close. Eastern Europe has thousands and thousands of ethnic groups within the region, wether they're nationalities (Russian, Polish, Romanian, etc.), foreign groups (Egyptians, Israelis, Iranians, etc.), or unnationally recognized ethnic groups (such as Silesians, Kurds, Laks, etc.).