1989- 136
20th century 91
1945-1989 36
19th century 23
1945- 22
21st century 16
18th century 10
1918-1945 9
To 1500 8
1991- 6
17th century 5
1564-1616 4
1878-1953 4
1945-1991 4
1980-1989 4
16th century 3
1889-1945 3
1933-1945 3
1985-1991 3
German occupation, 1941-1944 3
1953-1985 2
1986-1991 2
1990- 2
Medieval, 500-1500 2
Modern period, 1750- 2
Revolution, 1956 2
-419 or 420 1
13th-15th centuries 1
1579-1654 1
1600-1750 1
1689-1801 1
1801-1917 1
1848-1871 1
1856-1924 1
1871- 1
1871-1918 1
1878-1935 1
1879-1953 1
1890-1938 1
1896-1982 1
1897-1945 1
1900-1945 1
1910-1936 1
1911-1995 1
1913-1921 1
1918-1933 1
1929- 1
1931-2022 1
1944-1989 1
1944-1991 1
1945-1981 1
1945-1992 1
1949- 1
1953-1961 1
1959-1990 1
1967-1993 1
1968-1989 1
1975-1985 1
1976-2000 1
1976-2002 1
2000- 1
2002- 1
30 B.C.-476 A.D. 1
975-1018 1
Allied occupation, 1945-1955 1
Intervention, 1968 1
Middle Ages, 600-1500 1
Occupation, 1939-1945 1
Ottoman Empire, 1288-1918 1
Piast period, 960-1386 1
Revolution, 1989 1
To 1533 1
To 500 1
Turkish occupation, 1526-1699 1
Unification, 1990 1
active 11th century 1
approximately 1120-approximately 1177 1
approximately 1726-1791 1