Era
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1937-
1
1939-1945
1
1942-1992
1
1948-
2
1949-
1
1954-
1
1960-
1
1964-
1
1970-2000
1
19th century
1
2000-2020
1
20th century
5
Civil War, 1861-1865
4
Colonial period, ca. 1600-1775
2
Indian occupation, 1973
1
Revolution, 1775-1783
3
To 146 B.C.
2
To 1500
2
To 1775
2
To 1848
1
To 510 B.C.
1
Victoria, 1837-1901
1