Era
20th century
36
19th century
24
Revolution, 1775-1783
24
18th century
21
Civil War, 1861-1865
18
1945-
17
1900-1999
16
Colonial period, ca. 1600-1775
16
1809-1865
8
1951-
6
Early 19th century
6
1800-1837
5
1869-1934
5
1973-
5
1979-
5
1760-1789
4
1939-1945
4
1945-1980
4
1706-1790
3
1783-1850
3
1783-1865
3
1809-1817
3
1900-1945
3
1918-1945
3
1933-1945
3
1945-1991
3
1948-
3
Constitutional period, 1789-1809
3
Revolution, 1917-1921
3
1699-1777
2
1732-1799
2
1751-1836
2
17th century
2
1819-1892
2
1837-1901
2
1860-1918
2
1898-1946
2
1914-
2
1917-
2
1917-1921
2
1945-1989
2
1971-
2
1975-
2
1980-
2
New Plymouth, 1620-1691
2
Occupation, 1939-1945
2
Since 1945
2
Since 1979
2
To 1775
2
War of 1812
2
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