Independence did little to solve problems stemming from centuries of economic underdevelopment, and in mid-1979, political discontent led to the formation of an interim government, led by Oliver Seraphin. It was replaced after the 1980 elections by a government led by the Dominica Freedom Party under Prime Minister Eugenia Charles, the Caribbean's first female prime minister. Within a year of her inauguration she survived two unsuccessful coups and in October 1983, as chairperson of the Organisation of East Caribbean States, endorsed the US Invasion of Grenada.