SOCIO-CULTURAL FOUNDATIONS
From 1831 until 1918Stage 9-1.
From 1831 until 1861
Stage 9-2.
From 1861 until 1914
Stage 9-3.
From 1914 until 1918
Subperiod N 10.
From 1918 until 1980-s
Stage 10-1.
From 1918 until 1921
Stage 10-2.
From 1921 until 1939
Stage 10-3.
From 1939 until 1945
Stage 10-4.
From 1945 until 1980-s
Subperiod N 11.
From 1980-s and for some future
Czech-Slovakian region
Subperiod N 1.
As from ancient times up until VIII century AD
Subperiod N 2.
From VIII century until late X century
Subperiod N 3.
From late X century until 1241