
In the 19th century, Spain's colonies were racked by corrupt administration and internal disorder. Liberal ideologies fired the spirits of enlightened Manileños like Philippine national hero Jose Rizal who studied abroad and Filipino rebel leader Andres Bonifacio who read books on revolutionaries and philosophers. The seeds of revolution were thus sown in Philippine soil, and insurrection sprouted all over the countryside. By the late 1800s, Spain had lost control over the Philippines, and with her major defeat by the American fleet in the Battle of Manila Bay, totally relinquished her hold on the colony
But freedom would not come so easily, for the Filipinos eventually found themselves under their erstwhile ally, the Americans. Under the new conquerors, Manila spread out-wards, roads and bridges were built, and school taught the Filipinos Western culture and proficiency in a new language - English. Democratic processes were introduced; and neo-classical government edifices rose around the old city. But the outbreak of World War II soon halted all that.
The post-war years saw the reconstruction of Manila and its growth in area and population. Land was developed in areas now covered by the city municipality of San Juan. Subdivisions and residential villages flourished in Quezon City, Pasig, Pasay and Parañaque. Factories and industrial areas burgeoned in Caloocan, Malabon and Valenzuela. Adjoining municipalities of Las Piñas, Muntinlupa, Taguig, Pateros and Marikina were developed and annexed. In 1976, a conglomeration of four cities - Manila, Pasay, Caloocan and Quezon City - and 13 municipalities was officially designated as "Metro Manila".
Today, Metro Manila is also known as the National Capital Region - a thriving, ever enlarging urban sprawl covering about 630 square kilometers and harboring a population of about ten million.