The economy deteriorated under the rule of President Idi Amin Dada from 1971 to 1979. Amin used nationalist, militarist rhetoric and ill-chosen economic policies to eliminate foreign economic interests and build up the military establishment. In 1972 he expelled holders of British passports, including approximately 70,000 Asians of Indian and Pakistani descent. Many Asians had been active in agribusiness, manufacturing, and commerce. Their mass expulsion and Amin's efforts to expropriate foreign businesses undermined investor confidence in Uganda. Amin also increased public expenditures on military goods, a practice that contributed to escalating foreign and domestic debt during the 1970s. Relations with Uganda's neighbors soured, the EAC disbanded in 1977, and Tanzanian troops finally led a joint effort to overthrow the unpopular Amin regime in 1979. By 1980 the economy was nearly destroyed.