Era
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1915-1968
2
1916-
1
1917-
1
1918-1945
1
1919-
1
1920-2005
2
1922-
1
1925-
1
1927-1993
2
1928-
1
1928-1996
1
1936-
1
1937-1996
1
1945-
6
1948-
2
19th century
4
20th century
10
742-814
1
Early church, ca. 30-600
1
Medieval, 500-1500
1
Middle Ages, 600-1500
1
Since 1945
1
To 1172
1
To 1309
1
To 1500
1
approximately 820-approximately 891
1
ca. 1392-1445?
1