Complex sentence: At the conclusion of the Russian-Circassian War, the mountaineers relocated to the Ottoman Empire and their aul was replaced with a Russian settlement of Krasnaya Polayana, established in 1869.
Split into simpler sentences: At the conclusion of the Russian-Circassian War, the mountaineers relocated to the Ottoman Empire. Their abandoned aul was replaced with a Russian settlement of Krasnaya Polayana in 1869.