3
11th-century
|
2
sexuality
|
2
africa
|
1
indonesia
|
3
new-world
|
2
1930s
|
2
german-unification
|
1
marco-polo
|
3
disease
|
2
nautical
|
2
given-name
|
1
family
|
3
alaska
|
2
popular-culture
|
2
religious-history
|
1
protestant-church
|
3
marriage
|
2
titanic
|
2
assassination
|
1
articles-of-confederation
|
3
peasants
|
2
prehistory
|
1
chartered-companies
× 3 |
1
abraham-lincoln
|
3
political-geography
|
2
ireland
|
1
infantry
× 3 |
1
malaysia
|
3
alps
|
2
15th-century
|
1
reformation
× 2 |
1
singapore
|
3
punic-wars
|
2
hitler
|
1
mughals
× 2 |
1
qing-dynasty
|
3
carthage
|
2
diplomacy
|
1
greece
× 2 |
1
submarine
|
2
british-empire
× 6 |
2
diplomatic-history
|
1
spaceflight
|
1
war-crime
|
2
mongol-empire
× 2 |
2
orthodoxism
|
1
independence
|
1
propaganda
|
2
habsburg
× 2 |
2
peter-i-russia
|
1
aboriginals
|
1
mesoamerica
|