Complex sentence: The Democratic Party was a political party of South Korea, formerly called the Millennium Democratic Party (MDP; 새천년민주당; Saecheonnyeon Minju-dang), it changed its name to the present form on May 6,2005.
Split into simpler sentences: The Democratic Party was a political party of South Korea. Formerly called the Millennium Democratic Party (MDP; 새천년민주당; Saecheonnyeon Minju-dang), it changed its name to the present form on May 6,2005.