The Kingdom of Kartli-Kakheti (1762–1801 or 1801) was created in 1762 by the unification of two eastern Georgian kingdoms, the Kingdom of Kartli and the Kingdom of Kakheti, which had existed independently since the disintegration of the united Georgian Kingdom in the 15th century. From the early 16th century, and confirmed in 1555 by the Peace of Amasya, both kingdoms came and remained under intermittent Iranian rule, until 1747 when due to the death of Nader Shah, both kingdoms under the energetic king Erekle II, declared de facto independence and were unified.