Gran Colombia–Peru War
The Gran Colombian–Peruvian War (Spanish: Guerra grancolombo-peruana) of 1828 and 1829 was the first international conflict fought by the Republic of Peru, which had gained its independence from Spain in 1821, and Gran Colombia, that existed between 1819 and 1830. == Causes == The issues that led to war were Gran Colombian claims, dating from colonial times, concerning control of the territories of Jaén and Maynas.