section_path: Global trends/Growth of civilization
section_name: Growth of civilization
paragraph_text: Growth of civilization
  
  First was the expansion and growth of civilization into new geographic areas across Asia, Africa, Europe, Mesoamerica, and western South America. However, as noted by world historian Peter N. Stearns, there were no common global political trends during the post-classical period, rather it was a period of loosely organized states and other developments, but no common political patterns emerged. In Asia, China continued its historic dynastic cycle and became more complex, improving its bureaucracy. The creation of the Islamic empires established a new power in the Middle East, North Africa, the Caucasus, and Central Asia. The Mali and Songhai Empires were formed in West Africa. The fall of Roman civilization not only left a power vacuum for the Mediterranean and Europe, but forced certain areas to build what some historians might call new civilizations entirely. An entirely different political system was applied in Western Europe (i.e. feudalism), as well as a different society (i.e. manorialism). However, the once Eastern Roman Empire (Byzantium) retained many features of old Rome, as well as Greek and Persian similarities. Kievan Rus' and subsequently Russia began development in Eastern Europe as well. In the isolated Americas, Mesoamerica saw the building of the Aztec Empire, while the Andean region of South America saw the establishment of the Wari Empire first and the Inca Empire later. In Oceania, ancestors of modern Polynesians were established in village communities by the 6th century, a gradual intensification of complexity took place. In the 13th century, complex states were established, most notably the Tuʻi Tonga Empire which collected tribute from many island chains in the greater region.