Era
20th century
10
19th century
8
21st century
5
18th century
3
1918-1961
3
1918-1933
2
1945-
2
16th century
1
1765-1947
1
1783-1815
1
17th century
1
1806 or 7-1857
1
1809-1858
1
1890-1969
1
1928-2015
1
1937-1945
1
1942-
1
1976-2000
1
2000-
1
2001-2011
1
Civil War, 1861-1865
1
Civil War, 2011-
1
Revolution, 1775-1783
1
Unification, 1990
1
b.1934
1
b.1955
1