Final answer:
From the 10th century through the 11th century, Russian princes ruled a sizable area in and around the current Ukrainian capital of Kiev. The correct answer is A.
Step-by-step explanation:
From the 10th century through the 11th century, Russian princes ruled a sizable area in and around the current Ukrainian capital of Kiev. During this period, known as the era of Kievan Rus', the state emerged as a powerful confederation of city-states in Eastern Europe, with Kiev on the Dnieper River as its capital. Kievan Rus' was a significant center of trade and power, connecting the Baltic and Black Seas and facilitating trade with the Byzantine Empire. The confederation embraced Orthodox Christianity, which further strengthened its ties to Byzantium, and influenced the region's culture, art, and architecture.
The ascendency of Kievan Rus' came to an end with the invasion of the Mongols in the 13th century, leading to a power shift towards the Grand Duchy of Moscow in the 14th and 15th centuries. Moscow's rise as a new center of power ultimately led to the establishment of the Russian Empire, with its political core around Moscow/St. Petersburg. The correct answer is A.