Era
20th century
11
1810-1891
8
1900-1999
4
1866-1936
3
1970-2000
3
Civil War, 1861-1865
3
1831-1890
2
1840-1918
2
1847-1906
2
1860-1890
2
1920-1950
2
1940-1992
2
19th century
2
2000-2020
2
21st century
2
1216-1294
1
1700-1799
1
1742-1814
1
1748-approximately 1824
1
1793-1842
1
1800-1899
1
1838-1883
1
1865-
1
1867 - 1914
1
1867-1914
1
1880-1920
1
1890-1900
1
1890-1964
1
1898-1976
1
18th century
1
1900-2099
1
1903-
1
1905-1989
1
1919-2013
1
1923-2005
1
1932-2020
1
1933-
1
1939-
1
1961-
1
1961-1970
1
2001-2010
1
To 1950
1
Yuan dynasty, 1260-1368
1