Mohamed Atta
Atta was born in 1968 in a small town in Egypt's Nile Delta. He was 10 years old when he moved with his family to the Abdeen section of Cairo. Atta studied architecture at Cairo University, graduating in 1990, and continued his studies in Germany at the Hamburg University of Technology. In Hamburg, Atta became involved with the al-Quds Mosque, where he met Marwan al-Shehhi, Ramzi bin al-Shibh, and Ziad Jarrah, together forming the Hamburg cell. Atta disappeared from Germany for periods of time, spending some time in Afghanistan, including several months in late 1999 and early 2000 when he met Osama bin Laden and other top al-Qaeda leaders. Atta and the other Hamburg cell members were recruited by bin Laden and Khalid Sheikh Mohammed for the "planes operation" in the United States. Atta returned to Hamburg in February 2000, and began inquiring about flight training in the United States.
Personal life of Osama bin Laden
Osama bin Mohammed bin Awad bin Laden was born in Riyadh, Saudi Arabia. In a 1998 interview, Al Jazeera, he gave his birth date as 10 March 1957. His father was Mohammed bin Laden, from Yemen. Before World War I, Mohammed had emigrated from Hadhramaut, on the south coast of Yemen, to the Red Sea port of Jeddah, Saudi Arabia, where he began to work as a porter. Starting his own business in 1930, Mohammed built his fortune as a building contractor for the Saudi royal family during the 1950s. Though there is no definitive account of the number of children born to Mohammed bin Laden, it is generally put at 58. Mohammed bin Laden was married 22 times, although to no more than four women at a time per Sharia law. Osama was the only son of Mohammed bin Laden and his tenth wife, Hamida al-Attas, née Alia Ghanem, who was born in Syria.