Following Amin's departure, successive governments attempted to restore international confidence in the economy through a mixture of development plans and austere government budgets. Beginning in 1980, the second government of Milton Obote obtained foreign donor support, primarily from the International Monetary Fund, by floating the Uganda shilling, removing price controls, increasing agricultural producer prices, and setting strict limits on government expenditures. In addition, Obote tried to persuade foreign companies to return to their former premises, which had been nationalized under Amin. These recovery initiatives created real growth in agriculture between 1980 and 1983. The lack of foreign exchange was a major constraint on government efforts, however, and it became a critical problem in 1984 when the IMF ended its support following a disagreement over budget policy. During the brief regime of Tito Lutwa Okello in 1985, the economy slipped almost out of control as civil war extended across the country.