The largest Princely state by area at the time of partition was Kashmir.
Out of 562 princely states during 1947, 13 princely states decided to join Pakistan.
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These 13 princely states are:
Bahawalpur: On 3 October 1947, the Nawab of Bahawalpur, Sadeq Mohammad Khan V, acceded his state to Pakistan, becoming the first ruler to do so successfully.
Khairpur: The state of Khairpur acceded to Pakistan on 3 October 1947.
Chitral: The Mehtar of Chitral, Muzaffar-ul-Mulk, stated his intention to accede to Pakistan on 15 August 1947. On 28 July 1969, President Yahya Khan announced the full integration
The October Revolution, officially known as the Great October Socialist Revolution under the Soviet Union, also known as the Bolshevik Revolution, was a revolution in Russia led by the Bolshevik Party of Vladimir Lenin that was instrumental in the larger Russian Revolution of 1917–1923.
