Ukraine was known as "Kievan Rus" up until the 16th century. In the 9th century, Kiev was the major political and cultural center in eastern Europe. Kievan Rus reached the height of its power in the 10th century and adopted Byzantine Christianity. Kiev was under the influence of Poland and western Europe. Population is about 46,710,816. Capital City is Kyiv and other cities Kharkiv, Odessa, Donetske and Lvov. Languages are Ukrainian 67%, Russian 24%, Romanian, Polish and Hungarian. Major trading partners are Russia, Germany, Turkey, Italy, U.S. and Turkmenistan.