Era
20th century
22
19th century
8
21st century
4
1945-
3
1789-1900
2
1900-1999
2
1933-1945
2
1991-
2
1769-1849
1
1837-1901
1
1868-
1
1870-1914
1
1877-1938
1
1878-1912
1
18th century
1
1901-1910
1
1910-1921
1
1918-1933
1
1918-1945
1
1922-1949
1
1937-1945
1
1949-
1
1949-1976
1
1985-1991
1
1989-
1
1993-
1
1994-
1
2001-2009
1
British occupation, 1765-1947
1
Civil War, 1945-1949
1
Partition, 1947
1
Revolution, 1971
1