Complex sentence: The first multi-party elections were held in 1994, but an army uprising in May 1998 led to the Guinea-Bissau Civil War and the president's ousting in June 1999.
Split into simpler sentences: The first multi-party elections were held in 1994. An army uprising in May 1998 led to the Guinea-Bissau Civil War and the president's ousting in June 1999.