Quote:From what I understand, it was placed in a conflict between Saudi Arabia and Egypt. If I am not mistaken, the Saudi royal family backed the monarchist North Yemen, whilst Gamal Abdel Nasser supporter South Yemen and even sent troops in the 1960s, although I may certainly be mistaken.
This was the Yemeni Civil War which took place in North Yemen. While it was happening near one another, the uprising that took place in South Yemen was separate from that in North Yemen. North Yemen was a kingdom that was, for the most part, independent. South Yemen was under British control, a protectorate called the "Federation of South Arabia" and popular revolts took place there during the 1960s. They were tremendously helped in 1967 when the Six-Day War closed the Suez Canal and caused the British forces to pull out. In 1969 a Marxist wing of the revolutionary movement took power and moved the state towards the Soviet Union.
North Yemen in 1962 fell into a civil war between republican factions and the old monarchy. South Yemeni revolutionaries and Egypt supported the republican movement in North Yemen against the monarchy in North Yemen. Egypt took a more direct intervention and paid a steep price- 25,000 dead Egyptian soldiers. In turn the monarchy was supported by Saudi Arabia. The Republican movement won the revolution, though it gravitated more towards Egypt and Arab nationalism rather than unification with South Yemen. Relations between the two were not bad though, but they were divided ideologically. South Yemen declared itself to be a Marxist-Leninist state and aligned itself with the Soviet Union. North Yemen followed Egypt and declared itself "non-aligned".
As for what South Yemen was; it was a fairly standard "socialist" country in those times. It had a planned economy, claimed to work in the name of the workers, a host of social services and a focus on education and development. It was undeveloped so I'd imagine it took a similar line of plan that Vietnam was doing. South Yemen also attempted to support revolutionaries in Oman and gave some support to Palestinian groups. It was based in various forms of agricultures. It made shoddy attempts at making light manufacturing and textiles to make an industrial base. It discovered oil late into its life. Education was fairly good too from what I've read, at least better than its counter parts in the rest of the peninsula.
Remnants of the old state can be seen in parts of South Yemen, notably in the old public institutions and the plethora of housing built by the state (South Yemen was one of the few states in the Peninsula that boasted no homelessness).
South Yemen's downfall came in the late 1980s and early 1900s like other socialist countries. The Soviet Union was collapsing and the eastern bloc countries were falling. Yugoslavia was fracturing apart. This meant vital trading partners were going away, a stab in the heart for a still developing socialist state. There was already factions within the ruling Yemen Socialist Party that often broke into street fighting through much of the late 1980s. Opportunist elements within the South Yemeni state seized advantage and had the country merge with the north, using the oil fields as bargaining chips to secure their positions. The uprising in 1994 was a result of hardliner South Yemeni communists who were opposed to this move, but they were defeated.
The Sa'dah insurgency isn't related to the old socialist regime though. That's a different issue.