|
251
20th-century
× 16 |
41
nuclear-weapons
|
14
roman-empire
|
9
heraldry
|
|
229
world-war-two
× 12 |
33
ancient-rome
× 2 |
14
china
|
9
europe
|
|
175
united-states
× 13 |
30
naval
× 2 |
14
britain
|
9
monarchy
|
|
107
warfare
× 4 |
26
slavery
× 2 |
14
art
|
8
15th-century
× 2 |
|
86
aircraft
× 2 |
26
pyramids
|
11
death
× 3 |
8
medicine
|
|
82
japan
× 4 |
26
ancient-egypt
|
11
us-congress
× 2 |
8
historiography
|
|
78
war
× 5 |
25
infantry
× 2 |
11
music
|
6
tactics
|
|
77
weapons
× 2 |
22
americas
|
11
olympics
|
6
napoleonic-wars
|
|
66
world-war-one
× 5 |
21
19th-century
× 2 |
11
animals
|
6
age-of-discovery
|
|
63
18th-century
× 4 |
20
russia
|
10
ancient-history
× 2 |
6
middle-ages
|
|
54
american-revolution
|
19
british-empire
× 2 |
10
quotes
|
5
diplomacy
|
|
46
military
× 5 |
15
sports
|
10
france
|
5
political-history
|
|
41
american-civil-war
× 2 |
14
nautical
× 2 |
10
exploration
|
5
argentina
|
American Luke
