\paperw1800 \margr0\margl0 \plain \fs20 \f1 \fs22 \b 1228/1454 \b0 û Rule of the Arab Empire by the Rasulid sultans. A period of splendor in the sciences and arts commences.
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\b 1266/1273 \b0 û St. Thomas Aquinas writes the \i Summa Theologica\i0 .\par
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\b 1295 \b0 û The Rasulid Sultan Ashraf Umar II conceives the first astrolabe to become widely known and devises a new system of mathematics.\par
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\b 1300/1
924\b0 û \b \cf4 \ATXht10221068 Ottoman\b0 \cf0 \ATXht0 rule over Arabia, Syria, Mesopotamia, Egypt, Turkey, the Balkans, Greece, Palestine, and the Maghreb.\par