MacArthur adopted a drastic new policy against the irksome guerrilla support from the pueblos. From now on the pueblo residents, especially the principal, were to be declared guerrilla sympathizers or accessories unless they overtly and actively helped the U.S. Army. On January 7, he resurrected an old Spanish practice. He exiled 26 Filipino who had not taken an oath of allegiance to the United States to the island of Guam, long favored by the Spaniards for the deportation of filibusters. Among the first exiles were Apolinario Mabini, General Artemio Ricarte, and Pio del Pilar who was found guilty of violating his oath when he was caught trying to contact the guerrillas. They left the country on January 16, 1901, aboard the ship Rosencrans.

On June 1, 1901 San Pedro Makati, with a population of 2500, was incorporated into the province of Rizal. The first to serve as municipal president was Marcelino Magsaysay. He was succeeded by Eusebio Arpilleda whose term covered five years from 1903. Hermogenes Santos took over from 1908 to 1911, followed by Urbano Navarro from 1911 to 1913.

On February 28, 1914, the Philippine Legislature passed Act 2390, shortening the name San Pedro Makati to Makati. This occurred during the administration of Jose Magsaysay from 1913 to 1916. At the end of Magsaysay's term, the population of Makati was a little over 12,000.

It was in the 1930s when hints of things to come began to stir in Makati. Makati then was still a raw and distant place from Manila, but Ayala y Cia found cooperation and the same measure of foresight in Nicanor Garcia, who served as municipal president from 1925 to 1934. Garcia instituted municipal improvements in the form of piped water, electricity, paved roads, a hospital, a town hall, and - in a flush of optimism for the town's bid as a center of fun and pleasure- he gave the go-signal to the Philippine Racing Club to open the Santa Ana hippodrome in 1930.

Despite these ventures, the rural form of the hacienda was still fixed and frozen in time. However, a tentative finger of urban development poked out in the mid-thirties. When the Philippines became a commonwealth on November 15, 1935, Don Enrique Zobel was appointed by President Manuel Quezon to be his special aide. In his key position, Don Enrique got involved in the development of the areas surrounding Manila. He was part of the team that oversaw the building of a new metropolis in the forests of Diliman and the opening of roads and bridges that provided the links between several towns of Rizal Province. The longest of these roads was a highway that pushed through jungles of massive trees, wild groves and thick cogon fields that, when completed, stretched from Kalookan in the north to Baclaran in the south. Quezon named it Julio 19, after Rizal's date of birth. It later became Highway 54. Much later it was renamed Epifanio delos Santos, or EDSA for short.

AMERICAN PERIOD
Residents of San Pedro Makati, 1916	In June 1900 General Pio del Pilar was captured in San Miguel, Bulacan but was set free on June 21. On that day, General MacArthur, now military governor, issued an amnesty, as a result of which some prominent Filipino prisoners, del Pilar among them, took an oath of allegiance to the regime. The capture of del Pilar, as well as the army chief of staff, Pantaleon Garcia, seemed to have affected the morale of the Filipino soldiers. But by January 1901 McKinley and the U.S. Army had not crushed the "Tagalo insurrection."
MacArthur adopted a drastic new policy against the irksome guerrilla support from the pueblos. From now on the pueblo residents, especially the principal, were to be declared guerrilla sympathizers or accessories unless they overtly and actively helped the U.S. Army. On January 7, he resurrected an old Spanish practice. He exiled 26 Filipino who had not taken an oath of allegiance to the United States to the island of Guam, long favored by the Spaniards for the deportation of filibusters. Among the first exiles were Apolinario Mabini, General Artemio Ricarte, and Pio del Pilar who was found guilty of violating his oath when he was caught trying to contact the guerrillas. They left the country on January 16, 1901, aboard the ship Rosencrans. On June 1, 1901 San Pedro Makati, with a population of 2500, was incorporated into the province of Rizal. The first to serve as municipal president was Marcelino Magsaysay. He was succeeded by Eusebio Arpilleda whose term covered five years from 1903. Hermogenes Santos took over from 1908 to 1911, followed by Urbano Navarro from 1911 to 1913. On February 28, 1914, the Philippine Legislature passed Act 2390, shortening the name San Pedro Makati to Makati. This occurred during the administration of Jose Magsaysay from 1913 to 1916. At the end of Magsaysay's term, the population of Makati was a little over 12,000. It was in the 1930s when hints of things to come began to stir in Makati. Makati then was still a raw and distant place from Manila, but Ayala y Cia found cooperation and the same measure of foresight in Nicanor Garcia, who served as municipal president from 1925 to 1934. Garcia instituted municipal improvements in the form of piped water, electricity, paved roads, a hospital, a town hall, and - in a flush of optimism for the town's bid as a center of fun and pleasure- he gave the go-signal to the Philippine Racing Club to open the Santa Ana hippodrome in 1930. Despite these ventures, the rural form of the hacienda was still fixed and frozen in time. However, a tentative finger of urban development poked out in the mid-thirties. When the Philippines became a commonwealth on November 15, 1935, Don Enrique Zobel was appointed by President Manuel Quezon to be his special aide. In his key position, Don Enrique got involved in the development of the areas surrounding Manila. He was part of the team that oversaw the building of a new metropolis in the forests of Diliman and the opening of roads and bridges that provided the links between several towns of Rizal Province. The longest of these roads was a highway that pushed through jungles of massive trees, wild groves and thick cogon fields that, when completed, stretched from Kalookan in the north to Baclaran in the south. Quezon named it Julio 19, after Rizal's date of birth. It later became Highway 54. Much later it was renamed Epifanio delos Santos, or EDSA for short.
The Nielson Field in the mid-1930's	Zobel's proximity to Quezon made him privy to an offer to the government by a number of investors to build an airport on a turnkey basis. He immediately offered 40 hectares of the hacienda, located on a hard tract of land jutting from rice fields, clearly visible from the air, allowing clear approaches from all sides. After a number of meetings the deal was sealed and Makati became the launching pad for the country's take off to the "wild blue yonder" of commercial flight.
The airport took six months to build. The principal runways were laid out on what are now Paseo de Roxas and Ayala Avenue. The passenger depot was constructed on what is now Pasay Road. Between the two runways was the airport tower and passenger station, designed in the shape of an airplane. It was named after its builder and principal investor, L.R. Neilson, an American stockbroker. When Manila played host to the Eucharistic Congress in 1937, the Nielson airport opened in time to bring the provincial delegates into town. They were flown in by the two airlines licensed to operate - the Iloilo-Negros Air Company and the Philippine Air Taxi Company. Passengers were picked up at the airport by taxi, which had replaced the dilapidated coches de garage, and a new vehicle called the Austin cab.