gas fields to the Bangladeshi government which set the stage for the creation of Petrobangla. The national airline Biman was set up with planes from British Caledonian, the Indian government and the World Council of Churches. In the industrial sector, the Bangladeshi government built the Ghorashal Fertilizer Factory. Work began on the Ashuganj Power Station. Operations in the Port of Chittagong were restored after the Soviet Navy conducted a clearing operation for naval mines. The Mujib government faced serious challenges, which included the resettlement of millions of people displaced in 1971, organisation of food supply, health services and other necessities. The effects of the 1970 cyclone had not worn off, and the economy of Bangladesh had immensely deteriorated due to the conflict. In 1973, thousands of Bengalis arrived from Pakistan while many non-Bengali industrialists and capitalists emigrated; poorer non-Bengalis were stranded in refugee camps. Major efforts were launched to help an estimated 10 million former refugees who returned from India. The economy began to recover eventually. A five-year plan released in 1973 focused state investments into agriculture, rural infrastructure and cottage industries. But a famine occurred in 1974 when the price of rice rose sharply. In that month there was widespread starvation in Rangpur district. Government mismanagement was blamed. Many of Mujib's disastrous socialist policies were eventually overturned by future governments. The five years of his regime marked the only intensely socialist period in Bangladesh's history. Successive governments de-emphasised socialism and promoted a market economy. By the 1990s, the Awami League returned to being a centre-left party in economics. Secularism While Pakistan adopted progressive reforms to Muslim family law as early as 1961, Bangladesh became the first constitutionally secular state in South Asia in 1972 when its newly adopted constitution included the word "secularism" for the first time in the region. Despite the constitution's proclamation of secularism as a state policy, Mujib banned "anti-Islamic" activities, including gambling, horse racing and alcohol. He established the Islamic Foundation to regulate religious affairs for Muslims, including the collection of zakat and setting dates for religious observances like Eid and Ramadan. Under Mujib, Bangladesh joined the Organization of the Islamic Conference (OIC) in 1974. Bangladesh was not the only Muslim-majority secular republic in the OIC; others included Turkey and Nigeria. Secularism was later removed from the constitution by the military dictatorship in the late 1970s. Secularism was reinstated by the Supreme Court into the