Era
20th century
12
1945-
8
19th century
3
17th century
2
1872-1942
2
18th century
2
1960-1980
2
1993-
2
1806-1876
1
1855-1881
1
1857-1903
1
1880-1903
1
1895-1972
1
1899-1992
1
1917-
1
1918-1945
1
1918-1961
1
1922-
1
1935-
1
1942-
1
1945-1989
1
1961-
1
1961-1969
1
1968-
1
1977-
1
1980-
1
1989-
1
2009-
1
Early modern, 1500-1700
1
Partition, 1947
1
Puritan Revolution, 1642-1660
1