1 Louis XVIII and Charles X
2 Christina
3 James I and Edward VII
4 Konigsberg
5 Austro-Hungarian Empire
6 Russia
7 Granada
8 Austrian
9 Portugal
10 Strasbourg
11 Napoleon III
12 Crimean
13 Nicholas Breakspear / Hadrian IV
14 The Middle East in Crusader times. Lit.. Over the Sea
15 The artificial colour magenta, discovered the same year as the battle
16 Heligoland
17 Prague
18 Naples
19 Budapest (Buda and Pest)
20 Normandy
6 out of 20.. .. better than last time. Best wishes.