Era
1900 - 1999
1945-
20th century
6
Allied occupation, 1945-1948
2
1864-1910
1
1900-1999
1
1910 - 1945
1
1912-1945
1
1912-1949
1
1942-
1
1944-1949
1
1945-1948
1
1945-1980
1
1945-1992
1
1948-
1
1948-1960
1
1955-
1
Civil War, 1944-1949
1
Japanese occupation, 1910-1945
1
Republic, 1912-1949
1
Since 1912
1
Since 1945
1