Era
20th century
30
19th century
7
1878-1957
6
1882-1941
4
1910-1921
4
1821-1867
2
1922-
2
21st century
2
Civil War, 1922-1923
2
1852-1932
1
1865-1939
1
1879-1916
1
1879-1964
1
1883-1922
1
1890-1922
1
1900-1970
1
1901-1910
1
1922-23
1
1929-1994
1
1932-1981
1
1935-
1
1943-
1
1970-1980
1
1980-1990
1
1990-2000
1