Complex sentence: The book was created after the Spanish Governor and Captain-General Narciso Clavería y Zaldúa issued a decree on November 21,1849, in response to the inconsistencies in the way indigenous Filipinos arbitrarily chose surnames.
Split into simpler sentences: The book was created after Governor and Captain General Narciso Clavería y Zaldúa issued a decree on November 21,1849. The decree was issued in response to the inconsistencies in the way indigenous Filipinos arbitrarily chose surnames.