Complex sentence: It was the first to have several competing political parties and for the first time Eric Gairy's Grenada United Labour Party had competition from other political parties, including the Grenada National Party led by John Watts and Herbert Blaize.
Split into simpler sentences: It was the first to have several competing political parties. For the first time Eric Gairy`s Grenada United Labour Party (GULP/United Labour) had competition from other political parties, including the Grenada National Party (GNP) led by John Watts and Herbert Blaize.