Mawlay Hassan bin Mohammed (), known as Hassan I (), born in 1836 in Fes and died on 9 June 1894 in Tadla, was a sultan of Morocco from 12 September 1873 to 7 June 1894, as a ruler of the 'Alawi dynasty. He was proclaimed sultan after the death of his father Mawlay Muhammad bin Abd al-Rahman. Mawlay Hassan was among the most successful sultans. He increased the power of the makhzen in Morocco and at a time when so much of the rest of Africa was falling under foreign control, he brought in military and administrative reforms to strengthen the regime within its own territory, and he carried out an active military and diplomatic program on the periphery. He died on 9 June 1894 and was succeeded by his son Abd al-Aziz. Reign Early reign and rebellion in Fes Son of the sultan Muhammad IV, Mawlay (Moulay) Hassan was proclaimed sultan of Morocco on the death of his father in 1873. His first action was to crush an urban revolt in the capital Fes in 1874, which he had to besiege for a few months. The tanners rose up in protest "raging like lions and tigers" through the streets of Fes, pillaging the house of Muhammad Bennis, the Minister of Finance, turning Fes into a battleground. Mawlay Hassan I, who was on campaign sent letters calling for the pacification of the city. Shortly after, the hated tax collectors were withdrawn, and the rebellion halted. The tax collectors soon reappeared, leading to the rebellion commencing again more violently. The local Fes militiamen took up positions in minarets of Fes al-Bali and fired down on the army, but the two sides later negotiated peace and the rebellion was definitely terminated. Of strong Arab culture, he did not know any foreign language, although Mawlay Hassan I was a conservative ruler, he realised the need for modernization and the reform policy of his father. He strived to maintain the cohesion of his kingdom through political, military, and religious action, in the face of European threats on its periphery, and internal rebellions, He initiated reforms. He strived to ensure the loyalty of the great chiefs of the south. He did not hesitate to appoint local Caids like Sheikh Ma al-'Aynayn who gave him the Bay'a, the pledge of allegiance in Islamic Sharia law. He tried to modernize his army, and lead several expeditions