own, striving in accordance with the principle of social solidarity, respecting and supporting the legitimately constituted democratic authorities, defending and propagating human rights, participating in political and civic life, working to achieve and maintain peace, collaborating for the proper functioning of the administration of justice, protecting the country's natural and cultural resources, ensuring the preservation of a healthy environment and contributing to the financing of public expenses. Title III: Population and Territory Chapters I and II: Nationality and Citizenship Article 96 establishes the basis of Colombian nationality law, acquired at birth or by naturalization. Colombia, unlike several other countries in the Americas, has restricted jus soli, requiring that at least one of the parents of a child born in the country be a citizen or resident at time of birth. The Constitution bans denaturalization for birthright citizens, allows dual nationality (banned under the 1886 Constitution) and permits those who have renounced their citizenship to reacquire it. Article 98 allows for the renunciation and suspension of nationality, and sets the age of majority at 18. According to Article 99, citizenship is the prior and indispensable condition for the right to vote, to be elected and to hold public office. Chapter III: Foreigners Article 100 grants foreigners residing in Colombia the same civil rights and guarantees as those granted to citizens, but the law may, for reasons of public order, impose special conditions on or nullify the exercise of specific civil rights by aliens. Political rights are reserved to Colombian nationals, but the law has granted some resident foreigners voting rights in local elections and referendums. Chapter IV: Territory The territorial limits of the country are those established in international treaties and those defined by arbitration awards, and may be modified only by treaties approved by Congress and duly ratified by the President (Article 101). Title IV: Democratic Participation and Political Parties Chapter I: Democratic Participation The mechanisms of popular participation established in the Constitution (Article 103) are voting, referendums, plebiscites, popular consultations (consulta popular), open council meetings (cabildo abierto), popular legislative initiative and recall (direct recall) (revocatoria del mandato, lit. revocation of mandate). The various other forms of political participation allowed by the Constitution besides regular elections give the 1991 Constitution its participative character. These forms of political participation are regulated by Law 134 of 1994 and Law 1757 of 2015, although articles 104 through 106 further specify that the President