Demographic history of Japan before the Meiji Restoration papers of the Shōsōin (8th century) and others, as well as remnants of specific periods. Since Kyōto (or Heian-kyō) became the capital of Japan in 794, it has been one of the most important cities in Japan. Hiraizumi and Kamakura flourished under Northern Fujiwara clans (during 12th century) and Kamakura shogunate (1192 to 1333), respectively. The urban area of Kyōto suffered from the Ōnin War (1467 to 1477) and split into two districts, but coalesced into a great city of more than 400,000 inhabitants after the end of Sengoku period. The Christian missionaries led by Francis Xavier reported that the
Climate change and agriculture now provides significant amounts of food, on a national level to major importing countries, as well as comfortable income to exporting ones. The international aspect of trade and security in terms of food implies the need to also consider the effects of climate change on a global scale. A 2008 study published in "Science" suggested that, due to climate change, "southern Africa could lose more than 30% of its main crop, maize, by 2030. In South Asia losses of many regional staples, such as rice, millet and maize could top 10%". The Intergovernmental Panel on Climate Change (IPCC) has produced