VISHNU incarnated in the form of a human. The seventh incarnated form was known as RAMA. He was born to free earth from all the evils and to kill powerful demon king RAVANA who was the king of LANKA, modern day Sri Lanka.
RAMA
RAMA was born in the warrior SOLAR dynasty. RAMA was the first son born to king of Ayodhya, DASHARATHA and his wife KAUSILYA. RAMA had three brothers from same father but different mothers. LAKSHMAN and SHATRUGHN from second wife of king, Sumitra and BHARAT from the third wife of the king, Kaikayei. RAMA had an interest in Bow and Arrows and was good at it.
One day, saint VISHWAMITRA went to the court of king of Ayodhya and requested the king to send his two sons with him to his hermitage. The sage told the king that that they were terrified from the demoness TARKA and her sons who were not letting them worship and offer sacrifices to god. The demons are killing many saints to cause chaos. So king sent his two son with saint and ordered them to protect the saints at all cost.