History of the English line of succession to the French succession. On the day of Henry IV's death, 20 March 1413, the line of succession to the English throne following agnatic primogeniture was: Upon his death, the throne passed smoothly to the first person in line, who became Henry V. On the day of Henry V's death, 31 August 1422, the line of succession following agnatic primogeniture was: Upon his death, the throne passed smoothly to the first person in line, who became Henry VI. On the day of Henry VI's first deposition, 4 March 1461, the line of succession following agnatic primogeniture was; However, during the
Cham–Vietnamese War (1471) and once their economies recovered, these two kingdoms went to war again. When fighting resumed in 1471, the Champa kingdom found itself weakened and isolated. It has experienced numerous civil wars and, at one point, had five different rulers. For its earlier attack on Angkor, the Khmers ignored the Cham's request for assistance when Vietnam invaded. The Cham also requested Ming China to intervene by helping bring the Vietnamese back in line by force and demarcate the border between Champa and Vietnam. China, however, only verbally rebuked the Vietnamese for its incursion, which the Vietnamese ignored, proceeding with its attack