Central Europe lies between Eastern Europe and Western Europe. The concept of Central Europe is based on a common historical, social and cultural identity. Central Europe is going through a phase of "strategic awakening", with initiatives such as the CEI, Centrope or V4. While the region's economy shows high disparities with regard to income, all Central European countries are listed by the Human Development Index as very highly developed.
Elements of unity for Western and Central Europe were Roman Catholicism and Latin. Eastern Europe, which remained Eastern Orthodox Christian, was the area of Byzantine cultural influence; after the schism (1054), it developed cultural unity and resistance to the Western world (Catholic and Protestant) within the framework of Slavonic language and the Cyrillic alphabet.
Frankish Empire and its tributaries (AD 843-888)
Certain and disputed borders of Great Moravia under Svatopluk I (AD 870–894)
Kingdom of Poland in late 12th-13th centuries.
Bohemia in 1273
Kingdom of Hungary in 1190
Holy Roman Empire in 1600 superimposed on modern state borders
According to Hungarian historian Jenő Szűcs, foundations of Central European history at the first millennium were in close connection with Western European development. He explained that between the 11th and 15th centuries not only Christianization and its cultural consequences were implemented, but well-defined social features emerged in Central Europe based on Western characteristics. The keyword of Western social development after millennium was the spread of liberties and autonomies in Western Europe. These phenomena appeared in the middle of the 13th century in Central European countries. There were self-governments of towns, counties and parliaments.