Hassan II of Morocco Sultan to King in 1957. Hassan was proclaimed Crown Prince on 19 July 1957, and became King on 26 February 1961, after his father's death. Hassan's conservative rule, one characterized by a poor human rights record, strengthened the Alaouite dynasty. In Morocco's first constitution of 1963, Hassan II reaffirmed Morocco's choice of a multi-party political system, the only one in the Maghreb at that time. The constitution gave the King large powers he eventually used to strengthen his rule, which provoked strong political protest from the UNFP and the Istiqlal parties that formed the backbone of the opposition. In 1965,
Athittayawong in the country, Athittayawong and Siworawong administering as a king, which could cause future danger for the country. They persuaded Siworawong to ascend to the throne so there would be only one king as per custom. Athittayawong was dethroned and Siworawong assumed the title Somdet Phrachao Prasat Thong. Athitayawong was executed at Wat Kok Phraya () soon, ending the Sukhothai dynasty. Siworawong ascended the throne as the first king of the Prasat Thong dynasty. Athittayawong Athittayawong (; born 1618) King Athitayawong was the shortest-reigning monarch of Ayutthaya, only for 36 days in 1629 and the last king of the Sukhothai