Complex sentence: The leader of this revolt, Gen. José María Moncada, declared that he supported the claim of exiled Liberal vice-president Juan Bautista Sacasa, who arrived in Puerto Cabezas in December, declaring himself president of a "constitutional" government, which was recognized by Mexico.
Split into simpler sentences: The leader of this revolt, Gen. José María Moncada, declared that he supported the claim of the exiled Liberal vice-president Juan Bautista Sacasa. Sacasa returned to Nicaragua, arriving in Puerto Cabezas in December, and declared himself president of a "constitutional" government, which was recognized by Mexico.