Original sentence: In 1980, Dominica's fortunes improved when a corrupt and tyrannical administration was replaced by that of Mary Eugenia Charles, the first female prime minister in the Caribbean, who remained in office for 15 years.It became an independent nation in 1978.It is a parliamentary democracy within the Commonwealth.It was a province of the independent West Indies Federation in 1958 to 1962, but became a British possession again after the Federation broke up.The Commonwealth of Dominica is an island nation and borderless country in the Caribbean
Edited sentence: In 1980, two years after independence, Dominica's fortunes improved when a corrupt and tyrannical administration was replaced by that of Mary Eugenia Charles, the first female prime minister in the Caribbean, who remained in office for 15 years.The Commonwealth of Dominica is a borderless country in the Caribbean, a parliamentary democracy within the Commonwealth