What is the most likely reason that italy and germany supported the nationalists in the spanish civil war?

Italy and Germany also had nationalistic governments, and there were a lot of similarities among them. With nationalists winning, Germany and Italy had allies in Europe, and a counter-balance to Great Britain and France. Also, they believed that this could stop the spread of communism to other parts of Europe. Strategically, a nationalistic government was a benefit for the German and Italian regimes of the time. 

new ideas form the base for the growth of the people.each time they try to develop, they may discover a new form or abilities of themselves this makes the people satisfied in living their life in a happy way.this makes sense that new ideas of people cn change their live.the ideas, if bring their best, they will be changing their present state.