During its first 18 months of rule, the PDPA applied a Soviet-style program of modernizing reforms, many of which were viewed by conservatives as opposing Islam. Decrees setting forth changes in marriage customs and land reform were not received well by a population deeply immersed in tradition and Islam, particularly by the powerful landowners who were harmed economically by the abolition of usury (although usury is prohibited in Islam) and the cancellation of farmers' debts. The new government also enhanced women's rights, sought a rapid eradication of illiteracy and promoted Afghanistan's ethnic minorities, although these programs appear to have had an effect only in the urban areas. By mid-1978, a rebellion started, with rebels attacking the local military garrison in the Nuristan region of eastern Afghanistan and soon civil war spread throughout the country. In September 1979, Deputy Prime Minister Hafizullah Amin seized power, arresting and killing General Secretary Taraki. Over two months of instability overwhelmed Amin's regime as he moved against his opponents in the PDPA and the growing rebellion.