Era
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18th century
3
1902-1955
1
1908-1963
1
1909-1913
1
1910-1946
39
1912-1998
1
1913-1921
1
1915-2012
1
1917-2011
1
1918-
5
1918-2004
1
1919-1952
1
1925-2002
1
1928-1967
1
1931-1939
1
1931-1998
1
1936-
1
1937-
1
1944-
1
1945-1989
1
1946-
2
1946-1970
8
1959-
1
1959-1990
1
1960-
1
1968-
1
1970 ****
1
1970-
3
1970-1982
5
1970-1988
3
1970-1994
4
1981-1993
1
1982-1994
3
1983-
1
1988
1
1988-
1
1988-2000
8
1989-
2
1994-
3
19th century
4
2000
2
2017-2021
1
20th century
26
21st century
3
American occupation, 1914
2
Caste War, 1847-1855
1
Cenozoic
1
Civil War, 1936-1939
1
Colonia, 1540 1810
1
Colonial period, ca. 1600-1775
1
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