<P> Most of Sindh's prosperous middle class at the time of Partition was Hindu . At the time of Partition there were 1,400,000 Hindu Sindhis, though most were concentrated in cities such as Hyderabad, Karachi, Shikarpur, and Sukkur . Hundreds of Hindus residing in Sindh were forced to migrate . Some anti-Hindu violence in Sindh was precipitated by the arrival of Muslim refugees from India with minimal local Muslim support for the rioters . Sindhi Hindus faced low scale rioting unlike the Punjabi Hindus and Sikhs who had to migrate from West Punjab . </P> <P> On 6 December 1947, communal violence broke out in Ajmer in India, precipitated by an argument between Sindhi Hindu refugees and local Muslims in the Dargah Bazaar . Violence in Ajmer again broke out in the middle of December with stabbings, looting and arson resulting in mostly Muslim casualties . Many Muslims fled across the Thar Desert to Sindh in Pakistan . This sparked further anti-Hindu riots in Hyderabad, Sindh . On 6 January anti-Hindu riots broke out in Karachi, leading to an estimate of 1100 casualties . 776,000 Sindhi Hindus fled to India . The arrival of Sindhi Hindu refugees in North Gujarat's town of Godhra sparked the March 1948 riots there which led to an emigration of Muslims from Godhra to Pakistan . </P> <P> Despite the migration, a significant Sindhi Hindu population still resides in Pakistan's Sindh province where they number at around 2.28 million as per Pakistan's 1998 census; the Sindhi Hindus in India were at 2.57 million as per India's 2001 Census . Some bordering districts in Sindh had a Hindu majority like Tharparkar District, Umerkot, Mirpurkhas, Sanghar and Badin, but their population is decreasing and they consider themselves a minority in decline . In fact, only Umerkot still has a majority of Hindus in the district . The Sindhi community did not face large scale violence, but felt deprivation of homeland and culture . </P> <P> During the partition, there was no holocaust in Gujarat as there was in Punjab and Bengal . Only about 2.2% of the migrants to Pakistan were from Gujarat and Bombay city, and of them about 75% went to Karachi due to business interests . </P>

By which legislation were india and pakistan divided into two independent nations