It was caused by American demands that Spain resolve peacefully to Cube, which Spain was unable to do.
From what I personally know, Germany wasn`t originally going for Stalingrad but Caucasus oil fields, but Russian forces would not surrender.
The civil war improved the economy of the north, but harmed the economy of the south. The south relied heavily on agriculture/ producing cotton on slave worked plantations. The civil war led the slaves to finally be freed thus sending many southern farmers into poverty.
Khomeini became the face of the 1979 revolution<span>, a cleric at the head of a largely secular opposition. On December 11, 1978, a massive demonstration in Tehran officially called for Khomeini to </span>lead Iran<span> in the </span>revolution<span> and the overthrow of the Shah.</span>