What peoples inhabited Eastern Europe at the beginning of a new era?

What peoples inhabited Eastern Europe at the beginning of a new era? What were the features of the economy, beliefs, way of life of these peoples?

At the beginning of the new era, the European part of the mainland was settled by settlers from other territories. There was a great migration of peoples, so Germanic tribes and Slavs came to these territories. The Slavs were divided into three branches: southern, western and eastern. To the west of them were located Germanic tribes consisting of Goths, Franks, Finns and others. They began to settle in the territories and spread their culture. Until the 7-10th century, all of them believed in many gods who personified nature. Their main religion was paganism.