Complex sentence: The Angat River flowed directly in a snakelike wave to Calumpit meeting the Pampanga River, while the Tabang river which was a mere branch with adjoining intersections dividing the middle of the present Poblacion, flowed to Manila Bay passing Guiguinto and Bulacan towns.
Split into simpler sentences: The Angat River flowed directly in a snakelike wave to Calumpit meeting the Pampanga River. The Tabang river, a mere branch with adjoining intersections dividing the middle of the present Poblacion, flowed to Manila Bay passing Guiguinto and Bulacan towns.