The correct answers are<em> (A): Prince Vladimir arranged mass baptisms in Kiev. (B):Princess Olga converted to Roman Catholicism </em>and <em>(E): Missionaries from Constantinople came to Russia.</em>
Christianity was introduced into the East Slavic state of Kievan Rus (Russia) by Greek missionaries from Constantinople come to Russia during the 9th century. In 957 princess Olga of Kiev converted to Christianity when the Constantinople missionaries baptized her. Olga's grandson Vladimir, the prince of Kiev, was then Baptized in 988, he as well arranged a mass baptism for his residents at river Dnieper. Thus this became the iconic event that led to Christianization of Kiev as well as evolution of the church of Russia.
Merchants and traders in West Africa saw many advantages in converting to Islam. Literacy spread because belief in Islam encourages Muslims to learn the Quran. Many Muslims speak Arabic, the language of the Quran. In time, Arabic became the common language of the merchants and traders of West Africa
