When the Georgian kingdom was embroiled in a bitter civil war in the 1450s, the Sharvashidzes joined a major rebellion against King George VIII of Georgia, which saw him defeated at the hands of the rebels at Chikhori in 1463.

The independence of Abkhazia was largely symbolic as the region was generally left alone as the kings of Imereti had their hands full governing their designated area.

Until then, Abkhazia, secured from large-scale invasions by its mountainous location and impassable forests, had retained independence and profited from commerce in traditional Caucasian commodities, that of slaves not excepted.

As a result, the Sharvashidze potentates were able to expand their possessions in the east, first to the river Ghalidzga, and then to the Enguri, which serves as today's boundary between Abkhazia and Georgia proper.

Sadzny, formerly known as Zygia (Jiketi of the Georgian sources) extended north to Abkhazia proper between the modern-day cities of Gagra and Sochi, and was run by Gechba, Arydba and Tsanba clans.

These polities included also several minor fiefdoms governed by the representatives of the Sharvashidze-Chachba house or other noble families such as Achba (Anchabadze), Emhaa (Emukhvari), Ziapsh-Ipa, Inal-Ipa, Chabalurkhua and Chkhotua.

The autonomy of Abkhazia, which had functioned as a pro-Russian "buffer zone" in this troublesome region, was no more needed to the Tsarist government and the rule of the Sharvashidze came to an end; in November 1864, Prince Michael was forced to renounce his rights and resettle in Voronezh.

The harsh Russian reaction led, subsequently, to a considerable emigration of the Abkhaz muhajirs to the Ottoman Empire, especially after the locals took part in the rebellion of the Caucasian mountaineers incited by the landing of Turkish troops in 1877.