How did the unification of Italy help to contribute to the start of WWI?

In 1915, Italy signed the secret Treaty of London and came into the war on the side of the Triple Entente (Britain, France, Russia).

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

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