(
Dallas,
Texas, US) Three thousand years ago, several ancient states occupied the region of South Arabia, being
M'ain,
Qataban,
Hadhramaut, and
Saba. In these ancient times South Arabia claimed several notable features: the famous
dam at Marib, the cosmopolitan
incense trade, as well as the legendary
Queen of Sheba. Two thousand years ago the
Himyarites became the masters of South Arabia, dominating the region for several centuries. The
Kingdom of Aksum invaded South Arabia first in the 3rd–4th centuries, then later in the 6th under King
Kaleb who subjugated the region, c. 520. They were displaced by
Persian forces of the
Sassanid dynasty, c.575, who also arrived by sea. A half-century later, in the year 6
A.H. (628), the region converted to
Islam. ==Geography==