Complex sentence: The province is known as the "Historical Capital of the Philippines" for it was the cradle of the revolution against Spain, culminating with the declaration of independence from the colonizer of over 300 years on June 12,1898 in Kawit, Cavite.
Split into simpler sentences: The province is known as the "Historical Capital of the Philippines". It was the cradle of the Philippine Revolution, a renouncement of the Spanish colonial control for over 300 years, culminating with the declaration of independence on June 12,1898 in Kawit, Cavite.