Question

1. which nation left the triple alliance and joined the allied and associated powers?

bulgaria
italy
germany

Explanation:

During World War I, the Triple Alliance originally consisted of Germany, Austria - Hungary, and Italy. Italy, for various reasons including territorial aspirations and the changing dynamics of the war, left the Triple Alliance and joined the Allied and Associated powers. Bulgaria and Germany remained part of the Central Powers (the side related to the Triple Alliance's war efforts).

Answer:

B. Italy