Complex sentence: During this time he became a signatory of Charta 77, helped to restart Lidové Noviny, one of the country's major newspapers and reemerged with the Velvet Revolution, becoming the first Foreign Minister of post-Communist Czechoslovakia in 1989.
Split into simpler sentences: During this time he became a signatory of Charta 77, helped to restart Lidové Noviny, one of the country's major newspapers. Later he reemerged with the Velvet Revolution, becoming the first Foreign Minister of post-Communist Czechoslovakia in 1989.