The Act of Declaration of Philippine Independence

http://www.msc.edu.ph/centennial/declaration.html
This Declaration has actually something to say something new about the Philippine flag. The standard explanation for the Philippine flag - Blue stood for peace, Red - for courage, the triangle for the equality, the three stars representing the main island groupings of Luzon, Visayas and Mindanao. But if you read this paragraph (below) from the Declaration, it says something else:

"And lastly, it was results unanimously that this Nation, already free and independent as of this day, must used the same flag which up to now is being used, whose designed and colored are found described in the attached drawing, the white triangle signifying the distinctive emblem of the famous Society of the "Katipunan" which by means of its blood compact inspired the masses to rise in revolution; the tree stars, signifying the three principal Islands of these Archipelago - Luzon, Mindanao, and Panay where the revolutionary movement started; the sun representing the gigantic step made by the son of the country along the path of Progress and Civilization; the eight rays, signifying the eight provinces - Manila, Cavite, Bulacan, Pampanga, Nueva Ecija, Bataan, Laguna, and Batangas - which declares themselves in a state of war as soon as the first revolt was initiated; and the colors of Blue, Red, and White, commemorating the flag of the United States of America, as a manifestation of our profound gratitude towards this Great Nation for its disinterested protection which it lent us and continues lending us."