Answer & Explanation: the Cyrillic alphabet writing system was developed in the 9th (second half) – 10th century for Slavic-speaking peoples of the Eastern Orthodox faith and in contrast, the Kievan Rus state was established from the late 9th to the mid-13th century, under the reign of the Varangian Rurik dynasty. While the state was weakened by economic factors and was eventually overrun by the Mongols, its decline begun during the late 11th century and the 12th century leading to its disintegration into various rival regional powers; the cyrillic alphabet currently is used in more than fifty languages and as such is still in existence. It is therefore safe to say that the alphabet was in existence before the creation of the Kievan Rus state.
He was the first King of Bohemia to become Holy Roman Emperor. He was a member of the House of Luxembourg from his father's side and the Czech House of Přemyslid
The conditioned stimulus in pavlovian conditioning is an unique advantage that becomes linked with the unconditioned stimulus and eventually triggers a reflex. When delivered alone, an initially neutral stimulus that is coupled with an unconditioned stimulus ultimately elicits the desired reaction in an organism.
