Era
1917-1921
2
20th century
2
1775 - 1783
1
1783 - 1789
1
17th century
1
1894-1917
1
18th century
1
1917
1
1917-1921 - causes
1
1942-1949
1
1945-1962
1
1951-1979
1
1960-1980
1
20th century. --
1
Colonial period, ca. 1600 - 1775
1
Revolution, 1789-1799
1
Revolution, 1917-1921
1
Revolution, 1945-1949
1
Revolution, 1954-1962
1