Gran Colombia–Peru War This is clear to anyone who examines the many treaties signed between Colombia and Peru before 1830. In Peru, however, the dissolution of Gran Colombia is seen as a country ceasing to exist, giving way to the formation of new nation-states. The significance of this view is that the treaties Peru had signed with Gran Colombia became void when the countersignatory ceased to exist. The three new states, the Republic of New Granada (which later changed its name to Republic of Colombia), the Republic of Venezuela, and the Republic of Ecuador, in the Peruvian view, started with a clean diplomatic
Gran Colombia at Angostura) became a new country, the Republic of New Granada. In 1858, New Granada was replaced by the Granadine Confederation. Later in 1863, the Granadine Confederation changed its name officially to the United States of Colombia, and in 1886, adopted its present-day name: the Republic of Colombia. Panama, which voluntarily became part of Gran Colombia in 1821, remained a department of the Republic of Colombia until 1903, when in great part as a consequence of the Thousand Days War of 1899–1902, it became independent under intense American pressure. The United States wanted territorial rights in the future Panama Canal