The members of triple alliance and triple entente are:

Black hand society was formed to make the Serbianindependent from Austria-Hungary which werebeingsuppressedby them.

Archduke Franz Ferdinand was the heir of Austria. He was killedby the Bosnian student namedGavrilo Princip who was associated with black handsociety.

Austria declared world war at first againstSerbia.

The secret alliance made by theGerman chancellorwith Austria- Hungary and Italy to protectGermanyfrom France attack and isolate France is defined as triplealliance.
The treaty made by the France with Britain andRussia is defined as tripleentente.

The causes of World War I are:
-Groupism Alliance.
-Militarismand arm force.
-Economic Imperialism.
-Character of Kaiser William II.
-Balkan Crisis.
-Desire of getting Alsace and Lorraine.

Allies and Germany were the signatories of treaty ofVersailles.

World War I ended formally on 28th June, 1919 AD.

If I were the representatives of Germany in Versaillestreaty, I would do the following things:
-I wouldrequest to the foreign societyto minimize the problems ofsuppression.
-I would accept the treaty.
-I would not pay the money forcompensation.
-I would ask to reduce the money to bepaid tothe Alliance etc.

The major consequences of the firstworld war are:
-Treaty of Versailles.
-Unprecedented loss of life and property.
-Monarchydestroyed.
- Social changes.
-Rise of new nations.