Complex sentence: Bizcaya's captain Alejo Bilbao was, Nabarra's Enrique Moreno Plaza, he was from Murcia, and Gipuzcoa's Manuel Galdós was.The trawles had tge intention of attract the Cannarias to the Bizcaia's cost to have the help of the canyons of the land.
Split into simpler sentences: Bizcaya's captain Alejo Bilbao was, Nabarra's Enrique Moreno Plaza, he was from Murcia, and Gipuzcoa's Manuel Galdós was. The trawlers had the intention of attracting the Cannarias to the Bizcaia's coast to have the help of the canyons of the land.