SOCIO-CULTURAL FOUNDATIONS

3. From 1470 to 1572

4. From 1572 until early XVIII century

5. From early XVIII until early XX century

6. From early XX and until late XX century

7. From late XX century and for some future

IV. Smolensk - Bryansk - Chernigov - Sumy region (southern part of this socio-cultural region belongs at present to Ukrainian state)

Number of cycles - 1

Number of subperiods - 11:

1. From ancient times up until VIII century AD

2. From VIII until mid XI century

3. From mid XI until early XIII century

4. From early XIII until mid XIV century

5. From mid XIV century until 1514

6. From 1514 until early XVII century

7. From early XVII century until 1667

8. From 1667 to 1772

9. From 1772 to 1917

10. From 1917 to 1991

11. From 1991 and for some future

V. Central Ukrainian region

Number of cycles - 1

Number of subperiods - 9:

1. From ancient times up until IX century AD

2. From IX until mid XI century

3. From mid XI century until 1160-s