Era
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1939-1945
1
1940-
2
1941-
2
1959-
1
Confederation, 1867
1
Famine, 1932-1933
2
Jagellons, 1386-1434
1
John III Sobieski, 1674-1696
1
Revolution
1
Revolution, 1775-1783
6
Revolution, 1917-1921
1
Revolution, 1956
2
Russian occupation, 1940-1941
1
Since 1940
2
War of Independence, 1821-1829
2
approximately 1374-1399
1