HELP! Why did Italy form an alliance during ww2?

They joined the allies because the treaty of London

Explanation:

Italy joined the allies because of the treaty of London and it wanted territory on the order of Austria-Hungary. Italy was forced to attack Austria-Hungary. ... Italy signed the treaty of London, Committing itself to enter WWI on the side of the allies on April 26, 1915. Italy Is Looking For support against France.

I got this info off of the internet, hope it helps.

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