Subject
Causes
History
1,453
Politics and government
622
Foreign relations
257
World War, 1914-1918
218
World War, 1939-1945
208
Colonies
195
Slavery
104
War
87
Holocaust, Jewish (1939-1945)
85
Influence
83
Death
80
Political aspects
78
Diplomatic history
66
Mortality
56
Iraq War, 2003-2011
50
Ethnic relations
48
Social aspects
44
Social conditions
43
Historiography
42
World politics
41
Antisemitism
40
Administration
39
Jews
39
Secession
39
Antislavery movements
38
Relations
34
Nationalism
32
Economic aspects
31
Commerce
29
Boston Massacre, 1770
27
National socialism
26
Moral and ethical aspects
25
Taxation
25
Yugoslav War, 1991-1995
25
Economic conditions
24
Economic policy
24
Political and social views
23
Public opinion
23
Campaigns
22
Intellectual life
19
Liberty
19
Peace
18
Arab-Israeli conflict
17
Boston Port Bill, 1774
17
International relations
17
African Americans
16
Military policy
15
Race relations
15
Genocide
14
more ...