What led Spain to a civil war?

-And what Franco wanted to accomplish?

And why he was friends with Hitler and Mussolini.War between facism and socialism.

General Franco was facist (as was Hitler and Mussolin)i who would have preferred to see another facist state in Europe. They provided help notably planes for air raids such as Guenica - a portent for how civilian bombing would be such a feature of WW2 a few years later.A left-wing coalition government was elected to power in 1935. The rich, the powerful and the church viewed this as a threat to their power and to their wealth. The new government set about getting rid of disloyal generals, as a consequence Franco was removed from his post and was put in command of the Canary islands. In 1936 they Franco and his supports launched a well planned coup, they made some progress but failed to capture all cities. Armed workers formed themselves into militias and fought back.

People from all over the world, recognising that fascism was spreading across Europe, seen it as their fight too, many of them joined international brigades and came to Spain to fight against Franco.
The war was to determine whether Spain would be communist or fascist. It fell to Fascism.

France wanted Fascism

He was friends with Mussolini and Hitler because they were fascists.