Era
20th century
13,539
19th century
8,526
1900-1999
4,485
Early works to 1800
3,441
18th century
2,757
21st century
2,466
To 1500
1,680
1800-1899
1,522
17th century
1,496
16th century
1,207
1900 - 1999
1,200
2000-2099
872
20e siècle
790
1945-
757
Civil War, 1861-1865
700
1800-1999
666
Geschichte
615
Quaternary
581
1700-1799
547
To 1800
542
1728-1779
498
1749-1832
488
1939-1945
466
1786-1847
417
1800-1870
412
1951-
402
1800 - 1899
400
19e siècle
354
Medieval, 500-1500
353
From 2 million years ago
338
1500-1599
334
1254-1323?
323
1875-1962
322
1947-
317
Revolution, 1775-1783
307
Pleistocene
290
1900-2099
287
20e siècle
287
1600-1699
272
1872-1929
272
1868-1912
266
1960-
266
1949-
258
1480-1521
256
1944-
240
21e siècle
240
Since 1945
239
1963-
234
1870-1945
232
1981-
226
more ...