This paper seeks to understand from a regional perspective the causes of the civil war of 1876-1877 in the Northeastern Colombian Andes. An approximation is made to the urban hierarchy in the current Colombian departments of Santander and Norte de Santander between 1853 and 1875. The conditions leading to conflict and the change in that hierarchy are presented. In addition, intervening players and the location of the events of the war are identified. It concludes that the group that fell in urban hierarchy was the one that started the war and that this hierarchical change was one of the causes of the war.
