Era
20th century
19th century
13
Civil War, 1936-1939
12
1886-1931
3
1903-1946
2
1939-1975
2
1781-1832
1
1821-1880
1
1861-1957
1
1864-1936
1
1865-1898
1
1868-1931
1
1873-1967
1
1875-1910
1
1881-1959
1
1882-1941
1
1883-1955
1
1885-1966
1
1895-1974
1
1898-1960
1
1899-1961
1
1900-1942
1
1901-
1
1906-1989
1
1907-1946
1
1910-1946
1
1927-
1
1959-1990
1
1975-
1
21st century
1
Revolution, 1895-1898
1
Revolution, 1909
1