There are three bases for acquiring Philippine citizenship - by birth, by blood, or by naturalization. Citizenship is granted by birth if one is born in the Philippines, and by blood if one parent is a Filipino citizen. To acquire citizenship through naturalization, there are requirements such as being over 21, having lived in the Philippines for 10 continuous years, being of good moral character, meeting financial or educational requirements, and going through a judicial process to be adopted as a citizen. The three main routes to naturalization are through the courts if married to a Filipino, approval from the Office of the Solicitor General, or an act of Congress for significant public contributions.