The first multiparty election took place in May 1995, which was won by the EPRDF. The president of the transitional government, EPRDF leader Meles Zenawi, became the first Prime Minister of the Federal Democratic Republic of Ethiopia, and Negasso Gidada was elected its president. In post-Derg Ethiopia's Constitution (promulgated in 1995), the EPRDF not only took over the Derg's Soviet-inspired promise of cultural and administrative autonomy for the country's over 80 ethnic groups, but also borrowed the right to independence (secession) from the Soviet Constitution. In this manner, an ethnoterritorial federal model of statehood was adopted for Ethiopia (as originally developed in the Central European empire of Austria-Hungary and in the interwar Soviet Union).