Era
20th century
32
1900-1999
21
-1536
11
21st century
9
18th century
8
1945-
8
19th century
6
1700-1799
5
2000-2099
5
Since 1945
5
17th century
3
1600-1699
2
16th century
2
1770-1827
2
1800-1999
2
1818-1883
2
1900-2099
2
1902-1965
2
1929
2
1931-1940
2
1933-1945
2
1946-
2
1948-
2
1971-1980
2
1989-
2
Civil War, 1861-1865
2
Middle Ages, 600-1500
2
Since 1900
2
Since 1989
2
-1400
1
-1928
1
1000-1099
1
11th century
1
1288-1918
1
1313-1375
1
1400-1499
1
1421-1737
1
1443?-1485
1
1478-1798
1
1483-1546
1
1492-
1
1500-1599
1
1535-1714
1
15th century
1
1700-1899
1
1728-1799
1
1735-1826
1
1736-1806
1
1744-1818
1
1752-1840
1
more ...