Background: Mohandas Karamchand Gandhi (; Hindustani: ['mo:h@nda:s 'k@r@mtS@nd 'ga:ndhi] ( listen); 2 October 1869 - 30 January 1948) was an Indian activist who was the leader of the Indian independence movement against British rule.
Context: In 1919, Gandhi then aged 49, after the World War I was over, sought political co-operation from Muslims in his fight against British imperialism by supporting the Ottoman Empire that had been defeated in the World War. Before this initiative of Gandhi, communal disputes and religious riots between Hindus and Muslims were common in British India, such as the riots of 1917-18. Gandhi had already supported the British crown with resources and by recruiting Indian soldiers to fight the war in Europe on the British side. This effort of Gandhi was in part motivated by the British promise to reciprocate the help with swaraj (self-government) to Indians after the end of World War I. The British government, instead of self government, had offered minor reforms instead, disappointing Gandhi. Gandhi announced his satyagraha (civil disobedience) intentions. The British colonial officials made their counter move by passing the Rowlatt Act, to block Gandhi's movement. The Act allowed the British government to treat civil disobedience participants as criminals and gave it the legal basis to arrest anyone for "preventive indefinite detention, incarceration without judicial review or any need for a trial".  Gandhi felt that Hindu-Muslim co-operation was necessary for political progress against the British. He leveraged the Khilafat movement, wherein Sunni Muslims in India, their leaders such as the sultans of princely states in India and Ali brothers championed the Turkish Caliph as a solidarity symbol of Sunni Islamic community (ummah). They saw the Caliph as their means to support Islam and the Islamic law after the defeat of Ottoman Empire in World War I. Gandhi's support to the Khilafat movement led to mixed results. It initially led to a strong Muslim support for Gandhi. However, the Hindu leaders including Rabindranath Tagore questioned Gandhi's leadership because they were largely against recognising or supporting the Sunni Islamic Caliph in Turkey.  The increasing Muslim support for Gandhi, after he championed the Caliph's cause, temporarily stopped the Hindu-Muslim communal violence. It offered evidence of inter-communal harmony in joint Rowlatt satyagraha demonstration rallies, raising Gandhi's stature as the political leader to the British. His support for the Khilafat movement also helped him sideline Muhammad Ali Jinnah, who had announced his opposition to the satyagraha non-cooperation movement approach of Gandhi. Jinnah began creating his independent support, and later went on to lead the demand for West and East Pakistan.  By the end of 1922 the Khilafat movement had collapsed. Turkey's Ataturk had ended the Caliphate, Khilafat movement ended, and Muslim support for Gandhi largely evaporated. Muslim leaders and delegates abandoned Gandhi and his Congress. Hindu-Muslim communal conflicts reignited. Deadly religious riots re-appeared in numerous cities, with 91 in United Provinces of Agra and Oudh alone.
Question: What cities were involved?. Whats the answer?
United Provinces of Agra and Oudh alone.