Era
20th century
5
1914-
4
1898
2
19th century
2
-1914
1
1837-1878
1
1851-1924
1
1855-1926
1
1856-1924
1
1876-
1
1877
1
1896-
1
1896-1954
1
1917-
1
1917-1945
1
1927-1993
1
1933-1945
1
1939-1975
1
1945-
1
1945-1960
1
20e siècle
1
Coal strike of 1914
1
Geschichte 1943-1953
1
Riots, 1877
1
Since 1900
1
Steel Strike of 1910
1
Street-railroad employee's strike, 1910
1