Answer

1It has promoted the transmission of religions and cultural exchanges, highlighting a period of history。And helped to promote the development of all the civilizations involved.2The first time was to out pirates in the Palembang area(southeast ofpresent-daySumatra),to restoreorder and transport routes.The second and third times he used force was inself-defenseagainst anattack by a king of Ceylon(now SriLanka),and againsta gang of rioters from the Sumatra area.3Represent the artistic imagination and the speed of a heavenly hourse.