What happened to the previous Kazekage was he was killed by Orichamaru and Orichamaru impersonates him in the chunin exams to destroy the Hidden Leaf Village. And Gaara becomes Kazekage because he's the strongest shinobi in the village.
The sand village is lead by the Kazekage. Gaara is currently kazekage
The Return of the Kazekage is episode number thirty-two of Naruto Shippuden.
The rescue Gaara (Kazekage) arc begins at Naruto shippuden episode 8.
Over the 2 years since the last episode of naruto from naruto shippuden, within that 2 years Gaara become Kazekage of his village. Naruto becomes extremely jelous which seems to strengthen his hopes to becoming Hokage in his village Episode #2 - Naruto Shippuden (is when you find out)
Forth Kazekage.
Forth Kazekage.
The Kazekage before Gaara.
The manga has not gotten that far yet.
during shippuudden rescue kazekage arc
The current Kazekage is Gaara. The previous Kazakage was his father. There was probably the same monarchy type succession as in Konoha, because one of his other predecessors has the same sand control as him.
The Hokage rules over Konohagakure. The Kazekage rules over Sunagakure. The Mizukage rules over Kirigakure. The Raikage rules over of Kumogakure. The Tsuchikage rules over Iwagakure.