Kingdom of Hadhramaut (violet) in the 3rd century CE during the Sabaean-Himyarite war, it was eventually annexed by the Himyarite Kingdom.
Location of the Heart. Heart is located safely inside the chest cavity which looks like a cage bound by the ribs and breast bone (sternum). The chest cavity is also called as thoracic cavity and it lies between neck and abdomen.
1 The sternum, or breastbone, is a long flat bony plate which forms the most anterior section of the ribcage.  The primary function of the sternum is the protection of the heart, lungs, and blood vessels from physical damage.