here's some background info sourced from The Library of Congress...........
http://workmall.com/wfb2001/ethiopia/ethiopia_history_mussolinis_invasion_and_the_italian_occupation.html
That was great. You should do a series "History in 10 Words or Less"!
The simplest answer to the question of why Fascist Italy conquered Ethiopia is that it could. The Fascists dreamed of reviving the Roman Empire (without having a clue what made that empire work in the first place), but it turned out that Ethiopia and Albania were the only countries they could defeat.
Maybe they were looking for the Lost Ark from Biblical times. It’s supposedly kept in a safely guarded place in Ethiopia. (Not in an army warehouse as shown in Raiders of the Lost Ark).