By the end of the 1920s, Stalin's regime had revoked the NEP and reestablished the state monopoly on all economic activity. Once this occurred, the main goal of the Soviet economic policy in Armenia was to turn a predominantly agrarian and rural republic into an industrial and urban one. Among other restrictions, peasants now were forced to sell nearly all of their output to state procurement agencies rather than at the market. From the 1930s through the 1960s, an industrial infrastructure has been constructed. Besides hydroelectric plants and canals, roads were built and gas pipelines were laid to bring fuel and food from Azerbaijan and Russia.