Final answer:
Italy and Germany participated in the events in this timeline because they sought to expand their territories by joining forces.
Step-by-step explanation:
Italy and Germany participated in the events in this timeline because both countries sought to expand their territories by joining forces. Mussolini wanted to restore the glory of the Roman Empire and Hitler aimed to establish German dominance in Europe. By aligning with Germany, Italy hoped to gain territorial acquisitions and increase their power in the region.
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