I think it would be by advantage, if we had a table, in which all alliances are specified. It is somewhat toilsome to scan over always the whole Thread to find out, which country with which other country has received an alliance.
Or every country write it in their encyclopedia in a special chapter, just like:
CHINA
Alliances:
Member of the SATSUMA
Member of the League of Nations
.....
At war with:
NONE