Era
20th century
4
1900-2002
2
1908-1964
2
1921-
2
1926-2022
2
1930-2002
2
Elizabeth II, 1952-
2
1737-1806
1
1782-1945
1
1792-1872
1
1800-1899
1
1869-1948
1
1874-1965
1
1888-1935
1
1893-1970
1
1895-1952
1
18th century
1
1900-1999
1
1912-1949
1
1912-1949 (République)
1
1912-1994
1
1912-2002
1
1914-1918
1
1919-1947
1
1921-2021
1
1934-
1
1949-1976
1
1976-2002
1
19e siècle
1
19th century
1
20e siècle
1
Elisabeth II, 1952-
1
Japanese occupation, 1942-1945
1
Opium War, 1840-1842
1
Republic, 1912-1949
1
Siglo XX
1
Since 1900
1