113
world-war-two
× 7 |
20
japan
× 3 |
5
history-of-ideas
|
4
spanish-empire
|
75
nazi-germany
× 5 |
11
bulgaria
|
5
warfare
|
4
cuba
|
67
soviet-union
× 4 |
9
war
× 2 |
5
belgium
|
4
spain
|
56
20th-century
× 5 |
9
united-kingdom
|
5
world-war-one
|
3
military
|
47
railroads
|
8
united-states
× 2 |
5
fascism
|
3
technology
|
47
transportation
|
7
ww2-pacific-theater
|
4
nazism
|
|
45
germany
× 3 |
6
poland
|
4
communism
|
|
31
economy
|
6
hitler
|
4
political-history
|
davidfurber
