20th century 1,114
19th century 449
21st century 381
Civil War, 1861-1865 135
18th century 124
To 1500 80
1945- 78
17th century 63
1980-2020 57
16th century 36
1970- 36
1989- 29
Revolution, 1775-1783 28
1945-1989 26
1933-1945 25
1950- 18
1918-1945 16
1993- 15
1865-1918 14
2000- 14
1971- 13
1783-1865 12
1960- 12
1991- 12
1960-1980 11
To 1865 11
Early modern, 1500-1700 10
1775-1783 9
1861-1865 9
1929 9
1945-1953 9
1990- 9
2001-2009 9
Civil War, 1936-1939 9
Colonial period, ca. 1600-1775 9
1901-1966 8
1926-1984 8
1953-1961 8
1969- 8
To 1775 8
1846-1950 7
1899-1974 7
1918-2018 7
1955- 7
1961-1970 7
1975- 7
1976- 7
1980- 7
1994- 7
Medieval, 500-1500 7
To 1492 7
1896-1934 6
1917-1945 6
1925-1995 6
1942- 6
1946- 6
1981-2001 6
Bombardment, 1945 6
1564-1616 5
1775-1865 5
1865-1945 5
1865-1950 5
1901-1953 5
1901-1971 5
1918-1932 5
1941- 5
1945-1970 5
1945-1991 5
1959- 5
1961-1969 5
1979- 5
Qing dynasty, 1644-1912 5
Revolution, 1789-1799 5
Revolution, 1910-1920 5
1492-1648 4
1809-1865 4
1809-1882 4
1898-1976 4
1910-2004 4
1915-1959 4
1917-1963 4
1936-1953 4
1943- 4
1945-1992 4
1952- 4
1964- 4
1971-1980 4
1973-2020 4
1976-2000 4
1981- 4
1983- 4
1992- 4
2017-2021 4
476-1492 4
Allied occupation, 1945-1952 4
Civil War, 1991-2002 4
Civil War, 2011- 4
Empire, 30 B.C.-284 A.D. 4
Empire, 30 B.C.-476 A.D. 4
Ming dynasty, 1368-1644 4