The history of my hometown 1

Abu Arrayhan Muhammad ibn Ahmad al - Biruni.

Born: 15 Sept 973 in Kath, Khwarazm (now Khorezm province, Uzbekistan.)
Died: 13 Dec 1048 in Ghazna (now Ghazni, Afganistan.)

Al - Biruni is one of the major figures of Islamic mathematics. He contributed to astronomy, mathematics, physics, medicine and history.
Abu Rayhan al - Biruni was born in Khwarazm, a region adjoining the Aral Sea now known as Karakalpakstan. The two major cities in this region were Kath and Jurjaniyya. Al - Biruni was born near Kath and the town were he was born is today called Biruni after the great scholar. He lived both in Kath and in Jurjaniyya as he grew up and we know that he began studies at a very early age under the famous astronomer and mathematician Abu Nasr Mansur.