Answer:
Mussolini wanted to expand Italy back to the days of the Roman Empire, which included a large chunk of Africa. Abyssinia/Ethiopia was part of this, and the Italians, with their really really really really really bad army, failed to take Ethiopian territory in the 19th century during the days of imperialism. He could have invaded anywhere else, but would have started a war against Britain or France way earlier before WWII since most of Northern Africa was British or French territories.
Step-by-step explanation: