Era
20th century
61
21st century
25
19th century
23
1945-
8
1864-1920
7
17th century
6
1818-1883
6
16th century
5
1858-1917
5
To 1500
5
1902-1979
3
1922-1982
3
1926-1984
3
1930-2002
3
Early church, ca. 30-600
3
Ottoman Empire, 1288-1918
3
1632-1704
2
1869-1948
2
1889-1976
2
1899-1959
2
1921-1997
2
1929
2
1943-
2
1945-1964
2
1949-
2
1950-
2
1960-1980
2
1963-2005
2
1995-2012
2
476-1492
2
Civil War, 1861-1865
2
Primitive and early church, ca. 30-600
2
-1627
1
1312-1377
1
1469-1527
1
1564-1616
1
1573?-1637
1
1694-1746
1
1723-1816
1
1724-1804
1
1770-1831
1
1775-1833
1
1783-1815
1
1787-1869
1
1798-1857
1
1803-1882
1
1813-1855
1
1817-1862
1
1820-1903
1
1839-1914
1
more ...