Era
Revolution, 1775-1783
529
20th century
505
Civil War, 1861-1865
502
Revolution, 1789-1799
364
1861-1865
270
1900-1999
215
21st century
203
19th century
190
2001-2009
135
Civil War, 1936-1939
130
1775-1783
112
1945-
108
1789-1799
107
18th century
98
1861 - 1865
92
1775 - 1783
88
1789 - 1799
78
1900 - 1999
77
2000-2099
75
Revolution, 1917-1921
73
2001-
68
Since 1945
63
1989-
57
Civil war
57
1800-1899
55
Revolution
52
1738-1820
42
1991-
39
20e siècle
39
1729-1797
37
1945-1989
35
1789-1820
33
1933-1945
33
1990-
32
Since 2001
32
1936 - 1939
31
1936-1939
31
1939-1945
31
1789-1815
29
1960-
29
Revolution, 1971
28
1917-1921
27
1993-
27
Unification, 1990
27
1775
26
1917-1936
26
21e siècle
26
Since 1991
26
2000 - 2099
25
2001 - 2009
25
more ...