Return to. Globally, the 20th century was marked by: (a) two devastating world wars; (b) the Great Depression of the 1930s; (c) the end of vast colonial. www. cia. gov/library/publications/the-world-factbook/geo. www. cia. gov/library/publications/the-world-factbook/geos/xx. html#Intro. World History : HyperHistory Online navigates through 3 000 years of World History with links to important persons of world historical importance; civilization timelines; events and facts; and historical maps. www. hyperhistory. com/online_n2/History_n2/a. html www. hyperhistory. com/online_n2/History_n2/a. html. · Guam Pacific Daily News · November 19 10:24 AM· Guam Pacific Daily News · November 19 9:44 AM · Guam Pacific Daily News · November 19 9:43 AM news. ask. com ·  . History of BIOLOGY including Alcmaeon and Aristotle, Influential errors of Galen, Science's siesta Aristotle's notes on botany are lost, but many of his observations no doubt survive in the earliest known botanical text - nine books On the History of Plants written by Aristotle's favourite pupil, Theophrastus. www. historyworld. net/wrldhis/PlainTextHistories. asp?his. www. historyworld. net/wrldhis/PlainTextHistories. asp?historyid=ac22. A history of Ancient Sumer (Sumeria)including its Cities, Kings, Mythologies, Sciences, Religions, Writings, Culture, Cuneiform and Contributions. As we have noted, the symbols on the oldest Sumerian clay tablets, the world's first writing, were pictures of concrete things such as a person, a sheep, a star, history-world. org/sumeria. htm history-world. org/sumeria. htm. This is the World History Topic Page on the History Channel. Cities Of The Underworld Watch videos and learn the history below the streets of the world's famous cities! www. history. com/topics. do?type=topics&subject=worldhist. www. history. com/topics. do?type=topics&subject=worldhistory. Embed URL. bb&ob; border-bottom : 1px solid #E2ECF5; &cb;.