who invented arabic alphabet?
Saudi Arabia
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 Already in 1806 he wrote to his brother about his decision to become the one to decipher the Egyptian script : 

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 Arabic astronomical contributions include Albatenius ' discovery that the direction of the Sun 's apogee ( the place in the Sun 's orbit against the fixed stars where it seems to be moving slowest ) is changing . ( In modern heliocentric terms , this is caused by a gradual motion of the aphelion of the Earth 's orbit ) . Ibn Yunus observed more than 10 @,@ 000 entries for the Sun 's position for many years using a large astrolabe . 

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 Some theories about its origin are : 

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 The history of the name Allāh in English was probably influenced by the study of comparative religion in the 19th century ; for example , Thomas Carlyle ( 1840 ) sometimes used the term Allah but without any implication that Allah was anything different from God . However , in his biography of Muḥammad ( 1934 ) , Tor Andræ always used the term Allah , though he allows that this " conception of God " seems to imply that it is different from that of the Jewish and Christian theologies . 

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 The 400 @-@ year period from the 9th to 13th centuries AD was the Islamic Renaissance , a time when Islamic culture and science thrived . Greco @-@ Roman texts were preserved , copied and extended although new texts always emphasised the medicinal aspects of plants . Kurdish biologist Ābu Ḥanīfah Āḥmad ibn Dawūd Dīnawarī ( 828 – 896 AD ) is known as the founder of Arabic botany ; his Kitâb al @-@ nabât ( ‘ Book of Plants ’ ) describes 637 species , discussing plant development from germination to senescence and including details of flowers and fruits . The Mutazilite philosopher and physician Ibn Sina ( Avicenna ) ( c . 980 – 1037 AD ) was another influential figure , his The Canon of Medicine being a landmark in the history of medicine treasured until the Enlightenment . 
