As a means of recording the passage of time, the 11th century was that century which lasted from 1001 to 1100. In the history of European culture, this period is considered the early part of the High Middle Ages. There was a sudden decline of Byzantine power and rise of Norman domination over much of Europe, along with the prominent role in Europe of notably influential popes. In Song Dynasty China this century marked the high point of classical Chinese civilization, technology, and science, while rivaling political factions at court created strife amongst the leading statesmen and ministers of the empire. There was also a population explosion of 100 million and an economic revolution in China that spurred manufacture and production rates which rivaled even England's coal and iron output in the early Industrial Revolution. In Persia, there was likewise a golden age for medieval Iranian science and Persian literature. For Chola-era India and Fatimid-era Egypt, they had reached their zenith in military might and international influence. The Cholas' rival of the Western Chalukya Empire also rose to power by the end of the century. In this century the Turkish Seljuk dynasty comes to power in the Middle East over the now fragmented Abbasid realm, while the first of the Crusades were waged towards the close of the century. In Japan the Fujiwara clan continued to dominate the affairs of state. In the Americas the Toltec civilization flourished in central America, along with the Huari Culture of South America. In Russia, there was the golden age for the principality of Kievan Rus. In Korea the Goryeo Kingdom flourished and faced external threats from the Liao Dynasty (Manchuria). In Vietnam the Lý Dynasty began, while in Myanmar the Pagan Kingdom reached its height of political and military power.