evidence: The territory of what is now Azerbaijan was first ruled by Caucasian Albania and later various Persian empires. Until the 19th century, it remained part of Qajar Iran, but the Russo-Persian wars of 1804–1813 and 1826–1828 forced the Qajar Empire to cede its Caucasian territories to the Russian Empire; the treaties of Gulistan in 1813 and Turkmenchay in 1828 defined the border between Russia and Iran.[10][11] The region north of the Aras was part of Iran until it was conquered by Russia in the 19th century,[12][13] where it was administered as part of the Caucasus Viceroyalty. [...] Azerbaijan is home to a wide variety of landscapes. Over half of the land consists of mountain ridges, crests, highlands, and plateaus which rise up to levels of 400–1,000 meters (including the middle and lower lowlands), in some places (Talis, Jeyranchol-Ajinohur and Langabiz-Alat foreranges) up to 100–120 meters, and others from 0–50 meters and up (Qobustan, Absheron). The rest of Azerbaijan's terrain consists of plains and lowlands. Elevations within the Caucasus region vary from about −28 meters at the Caspian Sea shoreline up to 4,466 meters (Bazardüzü peak).[134] [...] - ^ "Rəhbərlik". ibar.az (in Azerbaijani). International Bank of Azerbaijan.