Read this list blow and tell me why 1419 AD we failed to produce any world recognized scientist? what went wrong!
Jabir Ibn Haiyan (Geber) Chemistry (Father of Chemistry) Died 803 C.E.
Al-Asmai Zoology, Botany, Animal Husbandry. 740 - 828
Al-Khwarizmi (Algorizm) Mathematics, Astronomy, Geography. (Algorithm, Algebra, calculus) 770 - 840
'Amr ibn Bahr Al-Jahiz Zoology, Arabic Grammar, Rhetoric, Lexicography 776 - 868
Ibn Ishaq Al-Kindi (Alkindus) Philosophy, Physics, Optics, Medicine, Mathematics, Metallurgy. 800 - 873
Thabit Ibn Qurrah (Thebit) Astronomy, Mechanics, Geometry, Anatomy. 836 - 901
'Abbas Ibn Firnas Mechanics of Flight, Planetarium, Artificial Crystals. Died 888
Ali Ibn Rabban Al-Tabari Medicine, Mathematics, Caligraphy, Literature. 838 - 870
Al-Battani (Albategnius) Astronomy, mathematics, Trigonometry. 858 - 929
Al-Farghani (Al-Fraganus) Astronomy, Civil Engineering. C. 860
Al-Razi (Rhazes) Medicine, Ophthalmology, Smallpox, Chemistry, Astronomy. 864 - 930
Al-Farabi (Al-Pharabius) Sociology, Logic, Philosophy, Political Science, Music. 870 - 950
Abul Hasan Ali Al-Masu'di Geography, History. Died 957
Al-Sufi (Azophi) Astronomy 903 - 986
Abu Al-Qasim Al-Zahravi (Albucasis) Surgery, Medicine. (Father of Modern Surgery) 936 - 1013
Muhammad Al-Buzjani Mathematics, Astronomy, Geometry, Trigonometry. 940 - 997
Ibn Al-Haitham (Alhazen) Physics, Optics, Mathematics. 965 - 1040
Al-Mawardi (Alboacen) Political Science, Sociology, Jurisprudence, Ethics. 972 - 1058
Abu Raihan Al-Biruni Astronomy, Mathematics. (Determined Earth's Circumference) 973-1048
Ibn Sina (Avicenna) Medicine, Philosophy, Mathematics, Astronomy. 981 - 1037
Al-Zarqali (Arzachel) Astronomy (Invented Astrolabe). 1028 - 1087
Omar Al-Khayyam Mathematics, Poetry. 1044 - 1123
Al-Ghazali (Algazel) Sociology, Theology, Philosophy. 1058 - 1111
Abu Bakr Muhammad Ibn Yahya (Ibn Bajjah) Philosophy, Medicine, Mathematics, Astronomy, Poetry, Music. 1106 - 1138
Ibn Zuhr (Avenzoar) Surgery, Medicine. 1091 - 1161
Al-Idrisi (Dreses) Geography (World Map, First Globe). 1099 - 1166
Ibn Tufayl, Abdubacer Philosophy, Medicine, Poetry. 1110 - 1185
Ibn Rushd (Averroes) Philosophy, Law, Medicine, Astronomy, Theology. 1128 - 1198
Al-Bitruji (Alpetragius) Astronomy Died 1204
Parts III, IV."
Ibn Al-Baitar Pharmacy, Botany Died 1248
Nasir Al-Din Al-Tusi Astronomy, Non-Euclidean Geometry. 1201 - 1274
Jalal Al-Din Rumi Sociology 1207 - 1273
Ibn Al-Nafis Damishqui Anatomy 1213 - 1288
Al-Fida (Abdulfeda) Astronomy, Geography, Histrory. 1273 - 1331
Muhammad Ibn Abdullah (Ibn Battuta) World Traveler. 75,000 mile voyage from Morocco to China and back. 1304 - 1369
Ibn Khaldun Sociology, Philosophy of History, Political Science. 1332 - 1395
Ulugh Beg Astronomy 1393 - 1449