The only Latin countries in which conflict has not arisen appear to be the principality of Andorra and the republic of San Marino (Giron y Areas, SituaciOn juridica de la Iglesia Catolica, Madrid, 1905, p. 173 et seq.).
Next in importance comes a mountain range, but here there is often difficulty as to the definition of the actual crest-line, and mountain ranges being broad regions, it may happen that a small independent state, like Switzerland or Andorra, occupies the mountain valleys between two or more great countries.
Seo de Urgel, near the headwaters of the Segre, is a fortified city which has been an episcopal see since 840, and has had a close historical connexion with Andorra (q.v.).
Andorra is surrounded by mountains, and comprises one main valley, watered by the Gran Balira, Valira or Balire, a tributary of the Segre, which itself flows into the Ebro; with several smaller valleys, the most important being that of the Balira del Orien, which joins the Gran Balira on the left.
The only roads are bridle-paths, and one municipal road by the Balira valley, connecting Andorra with the high road to Seo de Urgel and Manresa; but in 1904 France and Spain agreed to build a railway from Ax to Ripoll, which would greatly facilitate traffic.
