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The Principalia or noble class was the ruling and usually educated upper class in the pueblos of the Spanish Philippines, comprising the gobernadorcillo (who had functions similar to a town mayor), and the cabezas de barangay (heads of the barangays) who governed the districts. The distinction or status of being part of the principalia was a hereditary right. However, it could also be acquired, as attested by the royal decree of 20 December 1863 (signed in the name of Queen Isabella II by the Minister of the Colonies, Jose de la Concha). This distinguished upper class was exempted from tribute (tax) to the Spanish crown during the colonial period.
From the beginning of the colonial period in the Philippine, the Spanish government built on the traditional pre-conquest socio-political organization of the barangay and co-opted the traditional indigenous princes and their nobles, thereby ruling indirectly. The barangays in some coastal places in Panay, Manila, Cebu, Jolo, and Butuan, with cosmopolitan cultures and trade relations with other countries in Asia, were already established principalities (Kinadatuan) before the coming of the Spaniards. In other regions, even though the majority of these barangays were not large settlements, yet they had organized societies dominated by the same type of recognized aristocracy and lordships (with birthright claim to allegiance from followers), as those found in more established, richer and more developed principalities. The aristocratic group in these pre-colonial societies was called the datu class. Its members were presumably the descendants of the first settlers on the land or, in the case of later arrivals, of those who were datus at the time of migration or conquest.  The duty of the datus was to rule and govern their subjects and followers, and to assist them in their interests and necessities. What the chiefs received from their followers was: to be held by them in great veneration and respect; and they were served in their wars and voyages, and in their tilling, sowing, fishing, and the building of their houses. The natives attended to these duties very promptly, whenever summoned by their chief. They also paid their chief tribute (which they called buwis) in varying quantities, in the crops that they gathered. The descendants of such chiefs, and their relatives, even though they did not inherit the Lordship, were held in the same respect and consideration, and were all regarded as nobles and as persons exempt from the services rendered by the others, or the plebeians (timawas). The same right of nobility and chieftainship was preserved for the women, just as for the men.  Some of these principalities and lordships have remained, even until the present, in unHispanicized  and mostly Lumad and Muslim parts of the Philippines, in some regions of Mindanao.
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How much did they pay their chief?

Answer:
paid their chief tribute (which they called buwis) in varying quantities, in the crops that they gathered. The descendants of such chiefs,


Question:
Melanie Oudin (born September 23, 1991) is a former American tennis player and former world junior No. 2. She was a member of the American Fed Cup team from 2009 to 2011 and winner of the 2011 US Open mixed doubles title, with fellow American player Jack Sock. As a 17-year-old in the middle of 2009, Oudin reached the round of 16 of the Wimbledon Championships, followed by a quarterfinal at the US Open six weeks later. She reached a career-high ranking of world No. 31 on April 19, 2010.
At the beginning of the season, Oudin lost in the first round of qualifying at the Australian Open to Laura Robson.  Oudin qualified for the Family Circle Cup losing in the first round to 10th seed Anabel Medina Garrigues 4-6, 6-4, 0-6. On April 29th, she won the ITF 50k Boyd Tinsley Women's Clay Court Classic defeating 2nd seed and fellow American Irina Falconi in the final 7-6(0), 3-6, 6-1. She was awarded the USTA French Open Wild Card an account of her performance in the USTA Pro Circuit. At the French Open, Oudin drew Johanna Larsson of Sweden in the first round and won 6-3, 6-3. It was her first win ever at the French Open. In the second round, she lost to 21st seed and eventual finalist Sara Errani 6-2, 6-3.  Oudin began her grass court season at the Aegon Trophy. After qualifying for the main draw, Oudin lost in the first round to Heather Watson 6-4, 1-6, 6-7(5). Next, Oudin competed at the Aegon Classic. She qualified for the main draw beating 8th seed Bibiane Schoofs and 16th seed Gail Brodsky. In the main draw, Oudin advanced to her 1st WTA fina defeating 10th seed Sorana Cirstea, qualifier Michelle Larcher De Brito, Elena Vesnina, Irina Falconi, and 8th seed Ekaterina Makarova. The tournament was filled with rain delays and Oudin had to cope with the difficulty of coming off and on the court. She then defeated 5th seed Jelena Jankovic 6-4, 6-2 in the final to win her first WTA title. Winning the tournament bumped up her ranking from 208 to 122. Her performance earned her a wildcard at Wimbledon. At Wimbledon, she was given one of seven wildcard entries into the main draw. In the first round, she lost to world No. 69 Timea Babos of Hungary in three sets 4-6, 6-4, 3-6.  At the US Open on August 27, No. 107 ranked Oudin was unseeded and lost to fifteenth seed Lucie Safarova of the Czech Republic in straight sets 4-6, 0-6. In the women's doubles, she also lost in the first round teaming up with Grace Min.  With the 2012 season coming to a close, Oudin played several tournaments on the ITF tour. At the National Bank Challenger Saguenay 50k in Canada, she advanced to the semifinals before losing to Eugenie Bouchard 2-6, 2-6. At the John Newcombe Women's Pro Challenge in New Braunfels, Texas, she defeated wildcard Victoria Duval in the first round. With wins over Ulrikke Eikeri and Madison Keys, she made it to the final where she defeated Mariana Duque 6-1, 6-1. In this tournament, Oudin didn't drop a set.
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when did she get her first WTA singles title?

Answer:
In the main draw, Oudin advanced to her 1st WTA fina defeating 10th seed Sorana Cirstea,