Era
20th century
55
19th century
22
1900-1999
17
1933-1945
12
18th century
7
1918-1933
6
16th century
5
17th century
5
To 1500
5
1066-1485
3
1500-1599
3
1600-1699
3
1700-1799
3
1800-1899
3
1871-1918
3
1945-1955
3
21st century
3
1800-1999
2
1918-
2
1918-1945
2
1945-1990
2
2000-2099
2
Unification, 1990
2
-1751
1
1517-1648
1
1517-1740
1
1518-approximately 1598
1
1551-1600
1
1555-1642
1
15th-17th centuries
1
1648-1740
1
1673-1731
1
1694-1757
1
1694-1768
1
1700 - 1799
1
1706-1785
1
1712-1786
1
1735-1805
1
1744-1804
1
1749-1832
1
1791-1871
1
1800-1885
1
1800-1933
1
1879-1958
1
1890-1935
1
1890-1976
1
1917-1978
1
1939 - 1945
1
1990-
1
Bombardment, 1940-1945
1
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